2019年新加坡1盎司纪念银章四枚。新加坡国际钱币博览会。多彩图文。附原盒和证书,编号为#159, #160, #151,和#239。SINGAPORE. Quartet of 1 Ounce Silver Commemorative Medals (4 Pieces), 2019. Singapore International Coin Fair. All Brilliant Proof Uncirculated.Colorized Proofs. All are sold in the original display cases with certificates of authenticity #159, #160, #151, and #239.