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. Five Piece Proof Set, 1992. Inventions & Discoveries Series.Fr-46; KM-415-419. 5 pieces in set. 100 Yuan pieces struck in gold. Double sealed in original mint packaging, with case of issue and certificates of authenticity. From mintages of 1,000 pieces each. Also includes ancient compass in separate box. All areGEM BRILLIANT PROOF.