1992年中国古代发明系列第一组精铸银币5元5枚一组，各重22克，总含银量80克（2.57盎司），附原盒及证书，分别评 NGC PF 65 Ultra Cameo，PF 65 Ultra Cameo，PF 66 Ultra Cameo，PF 66 Ultra Cameo及PF 64 Ultra Cameo，#6342452-025至#36342452-029。People s Republic of China, set of 5x silver 5 Yuan, 1992, Ancient Chinese Inventions and Discoveries Series I, each weigh 22g, total ASW 80g (2.57oz), with original box and certificate of issue,graded NGC PF 65 Ultra Cameo, PF 65 Ultra Cameo, PF 66 Ultra Cameo, PF 66 Ultra Cameo and PF 64 Ultra Cameo respectively, #6342452-025 to #36342452-029 (1 box of 5 coins).
