1989年新加坡500元,生肖系列,蛇年。发行量仅2,500枚,含原盒及证书#0564,镜面底板,霜面图文,光泽亮丽。NGC PROOF-70 ULTRA CAMEO.SINGAPORE. 500 Dollars, 1989. Lunar Series, Year of the Snake. NGC PROOF-70 ULTRA CAMEO.Fr-B30; KM-72. From a mintage of only 2,500 pieces. Includes case of issue and certificate of authenticity serial #0564. Brilliant with hard mirror fields and frosted cameo devices.