China 1993 Inventions and Discoveries of China Series - Definition of Zero (Mathematics) 22 grams Silver Proof Coin - NGC PF-69 Ultra Cameo

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Part of Inventions and Discoveries Series. Commemorates the first use of zero in mathematics. This gem proof coin is minted from 20 grams of (.900 )pure silver. Rare opportunity to acquire this coin, which is usually available only as part of an expensive set.
Metal: Silver
Weight: 22 grams
Fineness: 90%
Mintage: 15,000
Denomination: 5 Yuan
Graded: NGC PF-69 Ultra Cameo
Year: 1993