Vladimir Penchev, a numismatist at the National History Museum, told BTA that the coin is made of electrum, an alloy of gold and silver used in early coins. He noted that the coin is "the first of its kind" to be found in Bulgaria, The Sofia Globe …
Vladimir Penchev, a numismatist at the National History Museum, told BTA that the coin is made of electrum, an alloy of gold and silver used in early coins. He noted that the coin is "the first of its kind" to be found in Bulgaria, The Sofia Globe …
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