1980年中国人民银行1元精铸铜币一组4枚,分别冬季奥运会,竞速滑冰,花样滑冰,高山滑雪及马术四款图案,分别评NGC PF66 Cameo, PF67 Cameo, PF68 Cameo 及 PF67 Cameo。 Peoples Bank of China, group of 4x brass proof 1 yuan, 1980, issued for the Winter Olympics, Speed Skating, Figure Skating Alpine Skiing and Equestrian,NGC PF66 Cameo, PF67 Cameo, PF68 Cameo and PF67 Cameo respectively (4)