1987年货币发行局50元。5枚一组。连号66EPQ。PMG Gem Uncirculated 66 EPQ.SINGAPORE. Board of Commissioners of Currency. 50 Dollars, ND (1987). P-22b. PMG Gem Uncirculated 66 EPQ.(KNB30d) 5 pieces in lot. A grouping of five consecutive 50 Dollar notes in Gem 66EPQ holders.