1992年中国古代科技发明发现(第1组)纪念金币1盎司全套5枚 完未流通
CHINA. 5 Piece 100, 1992. Inventions & Discoveries Series.Fr-166; KM-914-918. Set features (5) 50 Yuan Gold Proofs. In original case of issue and all pieces are double sealed in mint packaging. Original certificates of authenticity are included. This is set #55 of 1,000 minted.GEM BRILLIANT PROOF.