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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Coins and medals of the colonial countries (XVI-XXI centuries)
While in some countries, for example, in China or Japan, money in the form of coins was used for a long time, most of the Asian, African and American continents…

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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 earliest chased coins of the German successor states of the Roman Empire during the Great…

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Treasure Hunt in Ukraine
Findings of treasure hunters of Ukraine fascinate with their wealth and antiquity: here are Scythian gold, royal coins, church utensils, ancient icons, various artifacts and decorations. Perhaps you also want…

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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

European coins and medals (XVI-XXI century)
New time in numismatics begins in Europe around 1500 in the lands of the Habsburgs. In 1486, by order of the Archduke Sigismund (1439-1490), the Tyrolean guldengros was minted. It…

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How to search for coins with a metal detector
A pot of gold coins hiding not only leprechauns on the poppy field, such finds of Ukrainian treasure hunters happen in our not at all fairy-tale state. Of course, it…

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