1980年中国奥林匹克委员会第十三届冬季奥运会精铸铜币1元一组4枚，各重12克，分别「竞速滑冰」「冬季两项」「高山滑冰」及「花样滑冰」，分别NGC PF66, PF68 Cameo, PF66 Ultra Cameo 及 PF67 Ultra Cameo，连原包装及证书，每款发行29050枚。 Peoples Republic of China, set of 4x brass proof 1 Yuan, 1980, each weighs 12g, commemorative issue for the 13th Winter Olympics, Speed Skating, Biathalon, Alpine Skating and Figure Skating,graded NGC PF66, PF68 Cameo, PF66 Ultra Cameo and PF67 Ultra Cameo respectively, with original packaging but without certificate of authenticity, mintage of 29050 pieces (4)
