拍品描述： 1909年大清政府50元正反面样钞，入PMG封套，未有评分，保存完好，与下一项拍品100元均为重要版别，大热门，十分珍罕。The Ta Ching Government Bank, $50, uniface obverse and reverse proof mounted on card, 1909, green, brown and multicolour, Li Hong Zhang at left, fortresses at right, reverse brown and black, stone towers at centre,(Pick A78A), slabbed by PMG without a grade. Immaculately preserved and choice. The $50, together with the $100 offered in the next lot, are the key types of this series and in high demand. Extremely rare