1980年冬季奥运会精铸铜币1元一组4枚,分别NGC PF68 Ultra Cameo, PF67 Cameo, PF67 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 PF68 Ultra Cameo, PF67 Cameo, PF67 Cameo and PF67 Cameo respectively (4)