4 Rare Coins From the ’90s That Only Coin Collectors Know About
The last decade of the 20th century produced coins that modern numismatic enthusiasts spend three-, four- and even ...
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These coins have secret levers that make them come alive
Roman Booteen is an artist in Russia. He engraves each coin by hand...And integrates different layers of levers to create moving parts. Some of the mechanisms change the design, while others are ...