How to search for coins with a metal detector
A pot of gold coins hiding not only leprechauns on the poppy field, such finds…

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Interesting facts from the history of collecting
The origins of collecting lead in antiquity. Notable people collected antiques and art objects and…

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Medieval coins (ca. 500-1500)
Medieval coins (ca. 500-1500)The Middle Ages spanned 1,000 years of European history, starting with the…

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Numismatics - Peter's true passion
In recent years, interest in numismatics has increased among the Russian population, which is both…

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Yeru simple device

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