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How to properly store coins at home? The main thing is the absence of humidity and direct sunlight. It is important to properly organize the storage of the collection. There are three types of organizers.

Albums. Each page is divided into several compartments with plastic pockets. Items are stored without touching each other, they are easy and interesting to look at.
Tablets. Made from cardboard. There are slits made on the sheet, with which the coins are fixed.
Pencil cases. They consist of two layers of glass, between which products are placed in special compartments. The devices not only allow you to view products from all sides, but also reliably protect them from dust and moisture.

Coins made of different metals: care features

How to clean coins to make them shine? It depends on the metal. Each material is characterized by certain features that determine its care.

Table - Features of caring for coins made of different metals

Metal	Peculiarities	How to clean	Taboo
Gold	- Does not require frequent or aggressive cleaning; - easy to scratch even with a regular rag	Laundry soap	- Intense friction; - use of abrasives
Silver	- Oxidizes	- Ammonia; - hydrogen peroxide; - soda; - toothpaste; - “Trilon B” (for low grade)	- Intense friction
Copper	- Subject to patina formation	- Vinegar; - lemon acid; - "Trilon B"	- Removal of a thin layer of patina in the absence of corrosion and other damage
Bronze	- Formation of pink, dark brown or black plaque	- Vinegar; - lemon acid; - "Trilon B"	- Removing patina (reduces value); - treatment with nitric and sulfuric acids

Cleaning raises many questions bimetallic coins. Experts recommend treating them with Asidol. Thanks to its soft abrasive, the product quickly removes dirt from the metal surface.

Universal household products

When looking for a way to quickly clean old coins, you need to take care not to damage the metal. If you are new to numismatics, use one of the four universal tools.

Vinegar and toothpaste for rust

To remove rust and oxidation from coins, mix equal amounts of toothpaste and vinegar.
Rub the mixture over the surface using circular movements.
Remove any remaining product cold water and wipe the product dry.

If you want to clean steel products, you just need to dip them in table vinegar. After ten minutes, the stains should come off.

Soda for cleaning royal coins

Before cleaning the royal copper coins, take a scraper and carefully remove traces of earth, clay and other contaminants from the surface.
Dissolve a tablespoon of baking soda in a glass of water.
Boil the solution and put metal money in it.
Continue heating the liquid for another half hour.
Wash and dry the items.
If the result is not satisfactory, repeat the procedure again.

Ammonia for silver and bronze

Prepare a solution of one part ammonia and nine parts water.
To clean silver coins from green deposits, dip them in liquid.
After an hour, remove the items and wipe them well with a dry cloth.
If we're talking about about how to clean bronze coins, then you should not rub them. Just wrap it in soft cloth.

Under the influence of ammonia, bronze can change color. To clean pink stains from aluminum bronze coins, rub them with toothpaste.

Carbonated drinks for cupronickel

Cleaning cupronickel coins begins by placing them on the bottom of a glass container.
Fill them with Coca-Cola or other carbonated drink.
Metal money must be kept in liquid for seven days.
To ensure even cleaning, turn the items daily.

Cleaning USSR coins at home does not cause much trouble. Such specimens were in use relatively recently, and therefore complex stains and darkening are rare on them. Cleaning Soviet money with aggressive detergents is strictly prohibited. Folk remedies are more suitable.

Soda, ammonia and toothpaste

To clean white Soviet coins, mix equal amounts of baking soda, toothpaste and ammonia.
Apply the mixture to a cloth and rub the metal thoroughly.
Remove any remaining product with a brush.
Rinse the coins and wipe dry.

A paste of soda, toothpaste and ammonia can be prepared for future use. Place it in a sealed container and store in the refrigerator until next use.

Citric acid

Dissolve half a teaspoon in a glass of boiling water citric acid.
Hold the coin with tweezers and lower it into the solution for 15-20 seconds.
Rinse the product in water and wipe dry.

You can't keep money in acidified water longer than the specified time. With prolonged exposure, the products will lose their shine.

Cleaning copper coins: 3 ways

How to clean a copper coin at home? Problematic question, since copper is considered a “capricious” metal. Based on the experience of numismatists, we can distinguish three gentle and effective means.

Laundry soap

IN Plastic container pour a glass of boiling water and add a tablespoon of grated laundry soap.
When the shavings are completely dissolved, lower the metal money into the liquid.
Close the container tightly with a lid or cover with film and leave for three days.
After the specified time has passed, remove the coins and remove the layer of dirt with a brush.
Rinse off the soap with cold water and wipe dry.
If you are unable to completely clean the products, repeat the procedure several more times.

To speed up the cleansing process, add a teaspoon to the soap solution. baking soda. First dissolve the substance in a quarter glass of water and pour it into the container.

Oil

Pour Vaseline or olive oil into a saucepan and place on fire.
Once the oil boils, place coins in it.
Continue boiling until the contaminants are removed from the metal.
When the oil has cooled, remove the items and wipe with medical alcohol.

Similarly, coins can be boiled in laundry soap. This remedy is more gentle.

Vinegar

Before applying copper coin cleaner, wash the item thoroughly in soapy water.
Rub the areas that have become corroded with a cotton swab dipped in 9% table vinegar.
Rinse the product in cold water and dry.

How to Clean Coins Using Electrolysis

Electrolysis is one of the fastest and most effective ways to clean metal from dirt and stains. At the same time, the technique is dangerous, as it involves the use of electricity. And the risk of spoiling the coin increases. If you are confident in your abilities, strictly follow the instructions.

Cut off the plug from the 12-volt power supply.
Separate the double wire and expose the ends.
Solder copper wires to metal clamps.
Pour half a liter of water into a plastic container and dilute a tablespoon of soda (you can also use salt).
Plug the power supply into the outlet, and place the clamps in a container so that they do not touch each other.
Connect the clamp from which the hissing comes to a coin, and attach the second to any metal object. It could be a key or a spoon.
Old coins can take anywhere from 40 minutes to four hours to shine. It all depends on the degree of contamination of the product.
Unplug the device and carefully remove the clamps from the water.
Clean the metal product with a brush and liquid soap.

Electrolysis must be carried out in a well-ventilated area. Also, do not forget to protect your eyes with goggles and wear rubber gloves on your hands.

4 more taboos

When looking for a way to polish coins and give them shine and shine, it is important not to overdo it. Careless handling of tools or cleaning agents can lead to damage to precious items. To prevent this from happening, you need to remember four taboos.

Use of strong abrasives. If the coin is valuable, do not use washing powder, soda or other harsh substances for cleaning. This may cause scratches and damage to the pattern.
Boiling damaged products. If there are cracks or signs of corrosion, do not expose the product to high temperatures.
Use of dangerous methods by beginners. If you are not a professional in numismatics, you should not clean coins with electrolysis or harsh chemicals.
Prolonged exposure to cleaning products. If you expose a coin to substances longer than specified in the instructions, this may lead to damage to the structure of the product.

Metal money should come into contact with each other, with hands and with other foreign substances as little as possible. If you need to remove an item from the organizer, wash and dry it thoroughly before replacing it. This will help prevent the metal from darkening.

If you are just starting your journey as a numismatist, remember that cleaning coins at home cannot return them to their perfect original appearance. Therefore, if you have valuable specimens on hand, it is important to protect them from darkening and contamination. Before hiding the product in the organizer, thoroughly wipe it with alcohol and lubricate it with Vaseline.

The issue of cleaning coins is most often a concern for collectors. Some believe that home conditions are not suitable for this; others claim that cleaning a product at home is no more difficult than washing dishes.

Soviet coins were often made of iron and zinc. Working with such material is not difficult. To work you will need hydrochloric acid, previously diluted with water. The product is used for preliminary washing; the plaque is directly removed with a brush, the bristles of which are made of brass wire.

Rust can be removed with a knife; to get the usual shine, rub the product with a piece of dense fabric. When working with hydrochloric acid, it is important to maintain proportions. If you take too concentrated a composition, the old drawing will simply come off or be damaged. After processing saline solution, it is mandatory to wash in soapy water and wipe dry with a soft cloth.

Lead, tin and aluminum

To clean lead, tin or aluminum coins, avoid using chemicals. If the dirt does not form huge stains, you can remove it using a glass brush. In this case, the coins need to be rubbed well on cloth or felt. After cleaning, regardless of the metal used in the alloy, you need to thoroughly rinse the product, first with warm and then with cool water. This will prevent recurrence of damage and the coin will look beautiful.

Silver cleaning

The silver version of coins is not difficult to care for. For work it is permissible to use: soda, a weak solution of sulfuric acid, citric acid, ammonia, Silbertauschbader.

Soda

If you decide to use soda, then first soak the coin in a weak vinegar solution or lemon juice solution. It takes 15-20 minutes to stand it. Next, mix baking soda with water until you get a paste. Using your fingers, rub the pulp over each coin, tracking how the dirt goes away. This way of caring for your silver will not only get rid of impurities, but will also begin to shine beautifully. This method is only suitable for non-valuable items in your collection, since the abrasiveness of soda leaves micro-scratches, which affects the final cost.

Sulfuric acid

If a bright green coating has formed on the surface, then for cleaning it is better to give preference to a low concentration sulfuric acid solution. To work, you will need a porcelain cup into which the coin is placed and filled with solution. After preliminary softening of the plaque, remove the coin and remove dirt with a soft brush, rinsing with tap water. If the acid solution is preheated, the process will speed up. Do not forget about safety precautions when working with acid solution.

Limonka

A solution of lemon juice of low concentration will serve a good purpose in the process of washing silver. The coin is placed in the solution and gradually turns over. When the dirt begins to peel off, rub the items with a soft cloth. If the dirt is not completely removed, use the procedure again. It is important not to leave a coin unattended and on for a long time. It may lose its natural color.

Ammonia

An even easier way to get rid of stains is ammonia. It does an excellent job of removing greens and other compound deposits. It takes no more than 60 seconds to hold the coin in it. Rub the coin with a cloth for about the same amount of time, which will remove deposits that are not naturally expected. If a minute is not enough for cleaning, the procedure is repeated. If the oxides are still not removed from the coin, you cannot do without abrasive means, although numismatists do not recommend this method. Most collectors prefer Silbertauschbader. However, it can be difficult to obtain, but you can order it online.

Nickel coins

The nickel version of coins gets rid of green oxides using a soap solution, but it will not cope with red ones. The most commonly used solution for cleaning nickel coins is acetic acid. Since this product is an aggressive environment, the disadvantage of this cleaning method will be damage to the surface layer of the coin. Usually the result is a large number of small caverns. However, compared to a red-brown coin, which looks completely unnatural, one cleaned with vinegar looks nicer.

To get the job done, just use table vinegar. The products are placed with tweezers for several minutes and washed with tap water. To remove pinkish stains, you can rub with salt. However, do not forget about the abrasiveness of the product, which means the appearance of small scratches.

To work you will need 50 grams of table vinegar and salt in the amount of a teaspoon.

The mixture is thoroughly mixed; the salt does not need to be completely dissolved. During this cleaning, coins are placed on salt, which will fall out as sediment, and are turned over every two to five minutes. Depending on how much the coins have oxidized, it will take up to 20 minutes.

Hydrochloric acid

You can use hydrochloric acid for nickel coins. However, buying it in its pure form is quite problematic, so numismatists working at home are advised to find a replacement for it by choosing a plumbing cleaner that contains hydrochloric acid. There are plenty of them on the household chemicals market. Coins are placed in the product for several minutes and washed well under running water. Don't forget to use gloves.

Paste GOI

GOI paste can help in the fight against complex stains. However, this method is undesirable, and as for rare and valuable items, it is completely unacceptable. However, inexpensive coins with its help acquire a chic shine. Therefore, this method is only suitable for products that you do not plan to sell.

The action of GOI paste is based on an abrasive composition. By and large, the same as in the process of cleaning with soda, but the composition is more professional, so cleaning is carried out much faster. If coins are poorly preserved and have small relief, which is important, abrasive methods should be abandoned, as you can completely lose it.

One of the most valuable items for every numismatist are old coins. And the better they are appearance The more clearly the smallest inscriptions and signs on the metal are visible, the more expensive the cost.

Today you can find on sale a special cleaning agent for cleaning various metal surfaces. However, its price is quite high, which is beyond the means of many novice collectors. Therefore, most people successfully use old recipes to help clean coins from rust and deposits.

Let's look at several ways to help you properly clean a copper coin at home:

Neutral soap. Use a coarse grater to grate a piece of any neutral soap (baby or laundry soap) and generously spread the resulting slurry onto copper coins on both sides.
They should be left in this position for long time. Periodically remove the products and wipe them with a soft brush under running water to remove softened dirt.
Repeat the procedure until completely cleansed. This is the most gentle, but effective method, the main disadvantage of which is its duration. Sometimes, in order to clean a coin until it shines, you will have to keep it in soapy water for several weeks.
Table vinegar. This method is especially good if you need to remove traces of green deposits from the surface. Place the coin in a ceramic bowl and add 9% vinegar and water at the rate of one tablespoon per half glass of liquid.
You can replace vinegar with citric acid. Turn over from time to time. Upon completion of the procedure, rinse off the solution and any remaining dirt with running water and dry the coin with a napkin.
"Coca-Cola" or "Pepsi-Cola". The sweet carbonated drink contains orthophosphoric acid, which, when interacting with metal, easily eliminates damage.
Simply pour carbonated drink over dirty coins and leave overnight.

Note! Always begin cleaning your product by washing it with a mild soap solution as usual. This will allow you to assess the degree of contamination and choose the optimal method.

How to properly clean USSR coins?

Soviet coins are the most popular example of metal money, which every numismatist has in his collection. Depending on the denomination and time of minting, they included copper, zinc, nickel, bronze, and aluminum, which complicates the cleaning process.

Before using more radical ways, try the technologies described above - using baby soap or acetic acid solution.

If these methods do not give the desired results, use the following to clean nickel, zinc and aluminum bronze coins:

Ammonia. Buy a solution of ammonia at the pharmacy and pour it over the contaminated bronze coin. Turn over from time to time. After the metal has brightened, rinse with running water and scrub with a brush with medium-hard bristles.
Regular dishwashing detergent. If there is no severe rust on the surface, you can remove the yellow coating simply by washing it with Fairy. Gently but diligently rub the coin while washing - this will help remove a dense layer of dirt and grease.
Commemorative ten-ruble coins from the USSR period must be cleaned carefully so as not to damage the design. Good result gives a regular office eraser. Rub it on a dry surface until the coating disappears. This method is also effective if you want any alloy items to shine.

Note! Often, after processing, a Soviet coin acquires an unnaturally bright shine. This type of specimen is not respected by collectors. Put it under Sun rays. Over time, a layer of natural patina will appear, and the coin will look more attractive.

How to clean ancient precious metal coins?

Cleaning items made from precious metals requires very careful preparation and practical skills from their owners.

Important! Gold and platinum are expensive metals, so cleaning them yourself is not recommended. Take the item to a jewelry workshop, only then will you be sure that the cleaning will be done correctly and will not damage the collection.

If you want to take a chance and clean gold coin at home, try these methods:

Make a solution of two tablespoons of soda, a glass hot water and a few drops of dishwashing detergent. Place the gold item in the mixture for at least 8 hours. Rinse and dry the coin.
Pour a teaspoon of ammonia and 30 ml of hydrogen peroxide into 200 ml of water. Soak the gold in this solution for 15 minutes. Rinse and dry with a soft cloth.

To clean silver coin, use the cleaning method with ammonia, but taking some precautions:

By placing the specimen in a solution of ammonia, do not allow it to interact with oxygen.. Turn the coin over without removing it from the liquid, and after completing the procedure, do not immediately remove it from the container.
This is dangerous because oxidation may occur in air and the metal will deteriorate. Gradually dilute and drain the ammonia until the silver is soaked in clean water.
Only after this, take out the product, rinse and wipe dry with a soft cloth.

Royal coins are the pride of any collector. They have not only great historical, but also material value.

To carefully remove dirt and soil, boil coins in a soda solution at the rate of one tablespoon of baking soda per glass of water. Boil for at least half an hour to completely remove contaminants. Rinse and dry with a soft cloth.
If the deposits are very stubborn, boil the old coin not in water, but in oil. It is best to use medical Vaseline oil. Bring it to a boil and carefully place the product.
After 10 - 15 minutes of this “cooking” over low heat, the oxides and impurities will peel off. Remove the remains using a toothpick or a needle with a blunt end (for example, for knitting) so as not to spoil the embossing.

Cleaning bimetal coins

Bimetal is the material from which most modern metal money is made. This is a composite substance made of several layers of metals or alloys. In coins modern production Often there is a connection of two metals - in the central part and along the rim.

To achieve a bright, beautiful shine for this type of product, try the following method:

Make a thick mixture of baking soda and a few drops of ammonia. Use it to wipe the surface with your fingers until complete removal raid. Remember to use gloves to avoid damaging the skin of your hands.
Brush the sides of the coin with regular toothpaste or tooth powder.. Rinse with running water and wipe dry.

Money with colored enamel can also be cleaned using similar methods.

Summary table of cleaning products from various types metals:

Metal	Mechanical cleaning	Soap solution	Soda	Vinegar, citric acid	Ammonia	Boiling
Gold	+	+	+	—	+	Not recommended
Silver	+	+	+	Not recommended	+	+
Copper	+	+	+	—	+	+
Brass	+	+	+	+	Not recommended - it gets dark	+
Nickel	+	+	+	+	Not recommended - it gets dark	+
Lead	+	+	+	—	+	—
Aluminum	+	+	+	—	+	—

Numismatics is an exciting and interesting hobby that combines the passion of a discoverer and an impressive financial base. It is all the more important to follow the recommendations for the maintenance and preservation of your rarities.

08/02/2018 0 4,693 views

There is still ongoing debate among numismatists about how to clean a copper coin at home. Everyone has their “favorite” methods and different variants use of the same substances. The question is relevant because wrong actions and the use of substances with questionable properties can cause irreparable damage to the appearance of the coin. Any new method It’s better to check on inexpensive products that you won’t mind spoiling.

Cleaning copper coins is a painstaking process that requires patience, accuracy and skill. It often takes more than one day, and, unfortunately, does not always lead to the expected result. However, for a numismatist this skill is absolutely necessary to give the collection an aesthetic, attractive appearance. The cleaning technique and method directly depend on the degree and type of contamination.

Special means or traditional methods?

Hardware stores sell special solutions adapted for cleaning objects made of different metals: copper, zinc, silver... These products can eliminate various types dirt, oxides, patina. Such solutions are not cheap, and not everyone can afford them. In addition, it is not always easy to find the option you need on sale.

In this case, folk methods come to the rescue. We have collected for you some of the most common and safe options for cleaning a copper coin at home. Most methods are based on the use of improvised means that are easy to find at home or on the store counter.

It is worth considering that some of these methods are aimed at removing not only dirt, but also patina, and this is sometimes undesirable, since it reduces the value of the coin. Patina is a beautiful greenish tint that gives the product noble look and is valued by numismatists. It only needs to be removed in rare cases:

Intense pollution.
Corrosion has begun.
Strong uneven condition of the product - some areas are intact, others are significantly damaged.

If the natural patina still had to be eliminated, then for better preservation of the coin it is advisable to create an artificial one.

Two Quick Ways to Clean Copper Coins

Method 1

A gentle method, it is used if there is a high probability of damage antique coin. We will need a neutral baby soap, which is grated on a coarse grater and mixed with water. Add a little water so that the solution becomes not liquid, but plastic and holds its shape well. Place coins in the resulting mixture and wait for a while, periodically checking the degree of purification. The duration of this process can vary and directly depends on the amount of mud deposits.

Method 2

IN this option laundry soap is used. It is crushed to the state of chips and poured with boiling water. After dissolving the soap, you should get a mixture that resembles a gel in consistency. Old coins are placed there and they wait until the desired result is obtained. Money is cleaned with a soft brush and dried thoroughly.

Lemon acid

This method will help remove oxidation products, rust and various dirt stains. A sign of oxidation on the surface of a copper product is the presence of a green coating. It is formed by prolonged exposure to moisture.

A similar method works well on copper-nickel coins made in the USSR and on royal copper coins. The so-called “coppers” are most common, since they used to form the basis money turnover. Citric acid dissolves salts and oxides of copper, but, subject to all the rules, does not touch the base - the metallic copper itself.

To clean a coin, citric acid is diluted with water in a plastic or ceramic container to a concentration of 5-10%. The money is immersed in the resulting solution for a short time. The degree of cleaning must be monitored at all times, since an aggressive acidic environment with prolonged exposure can damage the metal. After complete removal of contaminants, it is advisable to create an artificial patina.

Vinegar

Another means of cleaning copper products is diluted vinegar. For 1 liter clean water take 2 tablespoons of food vinegar. Coins are placed in the resulting solution. The main rule is that there should not be too many of them and the container should be spacious. If the coins come into contact with each other or with the walls of the cup, then cleaning will become uneven and stains will form, spoiling the appearance of the product.

Several times a day, the coins should be removed from the solution and the loose layers should be brushed off with a toothbrush. When using a toothbrush, it is important not to overdo it, otherwise red spots may appear on the surface, which cannot always be removed. This product is especially suitable for coins that have a yellowish coating on top, which indicates the presence of lead in the alloy. A 10% acetic acid solution successfully dissolves such contaminants.

First of all, prepare a soap solution: grate or cut into small shavings a piece of laundry soap and pour 1 liter of boiling water. After the soap has completely dissolved, add soda. First, we also mix it separately with water. Place money into the resulting mixture.

The duration of their presence in the solution depends on the degree of contamination. Sometimes 15 minutes is enough. Remove soaked dirt from coins using a sponge. After all manipulations, lubricate the coins with alcohol and Vaseline to obtain shine and prevent re-contamination and oxide deposition.

To others food product, which helps to cope with stains on metal products, is kefir (required 3.2%). Its action is based on the reaction of lactic acid with metal oxides. Pour kefir into a shallow bowl, immerse coins in it and be patient. The process is slow, but you need to periodically monitor the condition of the coins and clean off deposits.

When does kefir become green tint, the coin must be removed and washed, the kefir changed and cleaning continued. Since the process can last more than one day, one serving of the drink will not do. Finally, the products are washed, you can even keep them in distilled water for a while, and then thoroughly dry.

The use of a special ultrasonic bath will greatly facilitate the process of cleaning copper. Distilled water or any of the above products is poured into a metal container: a weak solution of vinegar, citric acid or soap. The money is placed in a special strainer.

The mechanism of action is that ultrasound creates air bubbles in the liquid, which hit the coins and create an effect similar to mechanical cleaning. The time required for cleansing also depends on the severity of the contamination. In any case, first you need to set the most gentle mode, and then inspect the coin and, if necessary, start cleaning again.

Oil

Another way to clean copper is by boiling it in oil. Vaseline oil is most often used for these purposes, although many collectors indicate that the best (but not the most budget-friendly) option is olive oil.

Pour oil into the pan 2-3 cm from the bottom, bring to a boil and lower the coins into it, using tweezers. They should be boiled until completely cleansed. Finally they are processed ethyl alcohol to consolidate the result and degrease. The advantage of this method is that it preserves a beautiful patina.

Everyone's favorite, but not the healthiest, carbonated drink can also help clean copper and cupro-nickel coins. This is due to the presence of phosphoric acid in its composition, which is suitable for removing moderate contaminants. Coca-Cola is poured into a glass container and a coin is placed there.

Cleaning process in in this case may last from several days to a week. To speed it up, the jar is placed in warm place, for example, to the battery. At high temperatures chemical reactions go faster, and you can admire the clean, shiny coin sooner.

Electrolysis method

This method requires great care and thorough adherence to the correct technology, otherwise there is a risk of ruining the coin. To carry out the procedure you will need:

6-12 Volt power supply (as an option, you can take a universal Charger or an old smartphone charger);
a small metal product (it is better if it is not made of copper or brass), for example, a stainless steel spoon will do;
2 alligator clips;
capacious glass or ceramic container;
saline solution - 1 tablespoon of salt per 1 liter of water.

Sequencing:

The clamps are attached to the power supply with correct polarity.
The clip marked with a minus sign is attached to the coin, and the plus sign is attached to the second object.
Both ends are placed in the liquid so that the two metal objects do not come into contact with each other.
The power supply is connected to the network.

The cleaning process goes quite quickly, usually 5-10 minutes are enough for the product to acquire its original appearance, but sometimes you have to wait about an hour. As dirt and oxides are removed, the solution becomes cloudy. After disconnecting from the socket, the coin is removed from the solution and washed hot water and dries.

Be sure to follow the safety rules:

work with rubber gloves;
do not touch metal objects while current is applied;
Be sure to turn off the power before removing the coin from the liquid.

Video: how to clean a copper coin from oxide and dirt?

As a last resort...

For particularly contaminated specimens, there is a cleaning option using caustic soda. Use extreme caution when implementing it. Caustic soda is a solution of strong alkali, so you must wear gloves when working with it, and immerse the coin using tweezers. Otherwise, there is a risk of getting severely burned.

You need to keep the coin in the solution for a maximum of 10 minutes. If you notice green or blue spots appearing, the process should be stopped immediately to prevent damage. After cleaning, the coins are thoroughly washed.

Additional questions

Is it possible to clean a copper coin with GOI paste?

GOI paste (GOI - State Optical Institute) is a polishing agent based on chromium oxide. It is used for grinding steel alloys, glass, ceramics, hard plastics, and non-ferrous metals. Since the paste has strong abrasive properties, you should never clean copper coins with it - there is a risk of removing all upper layer, including undamaged parts. Although the item will be clean and shiny, it will be stripped of its original finish, resulting in significant depreciation.

Many numismatists collect money that is quite common in circulation. These include commemorative ten-ruble coins. They often end up in collections dirty, dull, and covered in organic compounds that change their natural color. To return the coin to its original appearance and shine, you need to clean it. This can easily be done at home without spending a lot of effort and money. In this case, you need to act carefully so as not to damage the product.

10-ruble commemorative coins belong to bimetallic. Their center is made of cupronickel (an alloy of nickel and copper), and the ring around the edge is made of brass.

Before you start cleaning such money, you should familiarize yourself with certain rules:

It is advisable to protect your hands during cleansing rubber gloves, since some agents act quite aggressively. In addition, it would be useful to use tweezers.
You should not use products with abrasive properties and aggressive household chemicals (Komet, Toilet duck, etc.). Also, do not use baking soda and vinegar. As a result, microdamages may remain on the metal, and the appearance of the product will be spoiled.
It is better to take the water used for cleaning not from the tap, but to buy it in bottles. Pipeline water often contains large amounts of chlorine. This can lead to oxidation of metals.
If you have several duplicate coins in your collection, you can test the effect of the selected cleaning product on one of them.

If you choose the wrong product, then after cleaning the 10-ruble coin may change color and become dull.

Cleaning methods

You can clean 10 ruble coins at home. Each numismatist chooses his own method depending on his experience in caring for his collection.

For cleaning, you can use both improvised means and special compositions.

Soap

A gentle method of cleansing is soaking in a soapy solution.

Algorithm of actions:

mix soap shavings with hot water to a paste consistency;
place the money in the prepared solution;
wait 5-10 minutes or, if the contamination is serious, leave the coin for a day;
after the allotted time, wipe the product with a soft toothbrush and rinse with water;
Dry the coin thoroughly.

This method will not harm the patina - a film on copper that indicates the authenticity of the coin and increases its value.

Instead of soap, you can use dishwashing detergent. For this you will need:

dilute 1 tablespoon of product in 1 liter of water;
soak the coin in the resulting solution for an hour;
then polish it with flannel.

After such cleaning, greasy stains disappear and organic compounds, changing the color of the product. As a result, the 10-ruble coin becomes light golden.

Toothpaste

Regular toothpaste is also suitable for cleaning. It is desirable that it be white and not contain abrasive particles.

Mode of application:

take a soft toothbrush and wet it warm water;
apply a little toothpaste to the brush;
gently scrub away dirt, monitoring the results;
When the coin becomes clean, rinse the product with warm water and wipe dry.

Do not press the brush too hard, otherwise scratches will remain on the surface.

After this, the coin will acquire its original shine and will delight the owner with its cleanliness for a long time.

Ammonia

Another remedy that helps you quickly clean coins is ammonia.

Instructions:

pour ammonia into a small container;
put money there for 5-10 seconds;
then take the product out and polish it with a soft cloth.

It is important not to overexpose the coin so that the metal does not begin to oxidize.

In addition, ammonia has a specific odor. Therefore, it is necessary to carry out cleaning in a well-ventilated area.

Formic alcohol

A solution of formic acid and alcohol will help restore ten-ruble coins to their original shine. It is sold in a pharmacy in finished form and is called formic alcohol (1.4% solution).

Procedure:

pour a little solution into a saucer;
soak money in it for 5 minutes;
then wipe them with a soft cloth.

This method should be used when you need to refresh the appearance of a coin. After this procedure, it will shine and look like new.

Cola

An unusual way of cleansing is using Coca-Cola.

Procedure steps:

pour cola into a small container;
put a dirty coin there;
leave overnight;
after the specified time has passed, take out a coin and wipe off the dirt with a rag;
rinse the product clean water and wipe dry.

Instead of cola, you can use other highly carbonated drinks.

Special tool for cleaning coins

Avid numismatists may find special remedy for cleaning Leuchtturm copper coins.

Mode of application:

soak the money in this solution for 3 minutes;
then rinse the products with warm water;
Leave on a dry cloth without rubbing.

If necessary, you can repeat the procedure.

This product works effectively and allows you to return the 10-ruble coin to its characteristic light golden color.

There are many methods for cleaning ten-ruble coins. It is important to select products suitable for cleaning bimetallic products. Otherwise, you may experience discoloration and oxidation of the metal.

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