1992年中国古代科技发明发现(第1组)纪念铂币1盎司全套5枚 PCGS Proof 69
CHINA. Five Piece Proof Set, 1992. Inventions & Discoveries. PCGS PROOF-69 DEEP CAMEO Secure Holder.;Fr-47; KM-410/14. 5 pieces in set. 100 Yuan pieces struck in platinum. From a mintage of only 100 pieces each. All are;PCGS PROOF-69 DEEP CAMEO Secure Holder.