1988年加拿大卡尔加里冬季奥林匹克运动会精铸银币20元一组10枚,及1985年国家公国100週年纪念1元银币,10元各重1盎司,含.925银,1元重1盎司,含.500银,总含银量9.75盎司,前者proof FDC,有氧化。 Canada, commemorative proof set of 10x silver $20, 1985-1987, issued for the 1988 Calgary Olympics, each weighs 1oz containing .925 silver, also $1, 1985, 100th anniversary of the National Parks, weighs 1oz containing .500 silver, in total 9.75oz ASW,the Olympic set proof FDC with some toning,