1988年中国濒危野生动物系列第一组精铸银币10元一对,「朱䴉」及「白鱀豚」,总含银量1.6盎司,均评NGC PF68 Ultra Cameo, #6342452-021 及 #6342452-022,附原盒及证书,前者编号12610,后者14610,每枚发行量34600枚。People s Republic of China, set of 2 silver proof 10 Yuan, 1988, Endangered Wildlife, Series I, Crested Ibis and Baiji Dolphins , ASW 1.6oz,both graded NGC PF68 Ultra Cameo, #6342452-021 and #6342452-022, with original packaging and certificates of issue, the silver 12610 (Ibis) and 14610 (Dolphin), mintage of 34600 pieces each. (1 set of 2)