2002年中华人民共和国四川三星堆纪念精铸银币 20元,含纯银 2盅司。发行量30000枚,带原盒及鉴定证书Peoples Republic of China, The Commemorative Proof Silver Coin of Sichuan Sanxingdui Relics, 20 Yuan, 2002, 2 oz of pure silver,mintage 30000 pcs Sold with orig box & cert of authenticity NGC PF69 Ultra Cameo