1988-1999年中国精铸银币10元一套12枚,生肖系列,龙年至兔年,各重1盎司,总含银量12盎司,附原盒及证书,牛年币评NGC PF 64 Cameo,其餘评68 Ultra Cameo或69 Ultra Cameo。People s Republic of China, set of 12x silver proof 10 Yuan, 1988-1999, Lunar Series, Dragon , Snake , Horse , Goat , Monkey , Rooster , Dog , Pig , Rat , Ox , Tiger and Rabbit , each weigh 1oz, total ASW 12oz, with original box and certificate of issue,graded NGC PF 64 Cameo for Ox , the rest are all 68 Ultra Cameo or 69 Ultra Cameo, #3959100-001 to 012 (1 box of 12 coins).