Chinese Coins - 2000 Years of Coin History and Money
China is the most populous country in the world. Its population is 1 billion inhabitants, and the history goes back more than 2000 years. Scientists have found that money was…

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Vintage German coins and medals
Coinage in the territory of the German state from the end of the Middle Ages (XV century) and until the introduction of the imperial state currency in 1871 is without…

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Numismatics - Peter's true passion
In recent years, interest in numismatics has increased among the Russian population, which is both exciting and quite profitable. Following this trend, many shops selling antiques open stores for coin…

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Commemorative coins
In the new history there are many anniversaries, celebrations, coronations, which you can almost always find out by looking at the coins issued in honor of this event. A Soviet…

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oxides connecting them

Cleaning of old coins

The purpose of this message is to acquaint interested readers with the most simple and safe methods of cleaning coins, which the author can recommend based on his many years of experience in the restoration of an archaeological metal at the State Hermitage Museum. Clearing coins is one of the crucial types of restoration, it is important for their study, dating, identification and storage. Ancient coins made of silver and copper alloys, found in treasures or in other archaeological excavations, most often enter the restoration workshop highly corroded, and sometimes completely mineralized. Under the action of water and salts, copper is destroyed in the soil to form green carbonates and chlorides, red cuprous oxide and black oxide. Continue reading

Coin collecting as a hobby
Modern collectors collect various items. Some collect stamps, others - coins, and there are those that are particularly original. Collecting coins is very popular, because everyone who has found or…

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Interesting facts about coins
Money constantly appears in our world. In any country, in any currency and in any form, be it paper or metallic money, but only thanks to them can we get…

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