西藏臆造精製一圆试作币。铜镍合金所铸,富兰克林造币厂为纪念自由解放所发行。仅689枚发行量,镜面底板,霜面图文。Bruce-8. Struck in copper-nickel, Liberty commemorative issue struck by the Franklin Mint. Only 698 pieces struck. Brilliant with hard mirror fields and frosted cameo devices.NGC PROOF-69 CAMEO.