Check the listing for details. Ancient BURMESE SHANKHA SHELL (500-600 A.D.) - Graphite Coin Mold. Condition: New. Listed at 47.00 USD. Unfortunately, numismatologists know little about this silver conch/shankha shell coin other than its origin in the Burmese Mon Kingdom and that it was circulated between 500-600 A.D. We do know that the shankha shell was historically used as an emblem of power, sovereignty, and prosperity across various ancient cultures, though it was predominantly seen throughout Hindu and Buddhist civilizations. ------This high-density graphite mold is made of 99.9% pure graphite and produces coins that are approximately 47mm in diameter with a thickness of up to 6mm if filled to the top. ***METAL COINS IN IMAGES ARE FOR DEPICTION ONLY AND ARE NOT INCLUDED WITH PURCHASE***