1980年中国人民银行冬季奥运会1元精铸铜币一组4枚,包括“马术”、“花式滑冰”,“滑冰”及“高山滑雪”,分别NGC PF67 Ultra Cameo,PF67 Cameo,PF68 Cameo 及 PF68 Cameo ,3944505-070,#3944505-055,#3944505-027 及 #3944505-007。People s Bank of China, group of 4x brass proof 1 yuan, 1980, issued for the Winter Olympics, Equestrian , Figure Skating, Speed Skating and Alpine Skiing,graded NGC PF67 Ultra Cameo, PF67 Cameo, PF68 Cameo and PF68 Cameo , 3944505-070, #3944505-055, #3944505-027 and #3944505-007 (4).