1999年中国精铸银币10元,「中国石窟艺术 敦煌」,2盎司加厚,附原盒及证书,NGC PF 68 Ultra Cameo,#6342453-050。People s Republic of China, 1x silver proof 20 Yuan, 2001, Dunhuang, Buddha Statue - Tang Dynasty , 2oz piedfort, with original box and certificate of issue,graded NGC PF 68 Ultra Cameo, #6342453-050 (1 box of 1 coin).