1988年卡尔加里第十五届冬季奥林匹克运动会精铸银币20元一组10枚，每枚1安士，含.925银，proof品相，连原盒及证书，编号000944。 Calgary Winter Olympic Games, 1988, a set of 10x silver proof $20, Royal Canadian Mint, 1 oz each containing 0.925 silver, proof, with original box and certificate , #000944 (10).
