1979年新加坡货币发行局贰拾圆。色彩艳丽的鸟系列贰拾圆纸钞,大部分未经流通,右上角有一处非常细微的隆起。SINGAPORE. Board of Commissioners of Currency. 20 Dollars, ND (1979). P-12. Choice About Uncirculated.。A colorful Bird Series 20 Dollar note with mostly uncirculated paper though we disclose a very negligible corner bump at top right for accuracy.。