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 完未流通
CHINA. Five Piece Proof Set, 1992. Inventions & Discoveries Series.Fr-47; KM-410-414. 5 pieces in set. 100 Yuan pieces struck in platinum. Double sealed in original mint packaging, with case of issue and certificates of authenticity. From mintages of 100 pieces each. Also includes compass and spoon in separate box. All areGEM BRILLIANT PROOF.