1992年中国古代科技发明发现(第1组)纪念银币15克铜铸币等一组6枚 完未流通
CHINA. Empress Edition Inventions and Discoveries Proof Set, ND (ca. 1992).Fr-B92; KM-317, 315, 405, 407, & 408. 6 pieces in lot. In original case of issue with certificate of authenticity. Set #194 of 688. Includes miniature working spoon compass.GEM BRILLIANT PROOF.