Greek coins (VII-II century BC)
In ancient Greece, the fundamental foundations of the development of European civilization were laid. The cultural achievements of the “classical time” (ca. 500-363 / 323 BC) include not only the…

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Coin Albums
Many numismatists with a sense of satisfaction recall the old days, when doing coin collecting, they could buy coin albums in almost any store in the country, which over time…

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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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Valuable little thing. How to make money on investing in rare coins
Rare coins can grow in price by hundreds of percent over ten years. What influences their value and how to find assets attractive for investment in this market? Old coins…

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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

The most rare and expensive coins of the USSR
In this article we will consider the reasons for the emergence of expensive coins of the USSR. Surprisingly, the list of the most expensive Soviet rubles and kopecks includes not…

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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…

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