1929-1931年广州市立银行伍拾圆单面正反面试样票一对,无编号及签名,PMG 63,PMG记录中唯一之一枚 The Canton Municipal Bank, China, obverse and reverse PROOF for $50, ND (1929-1931), no serial numbers or signatures, guilloche in purple, multicolouor underprint, orange reverse with Sun Yat Sen at centre,(Pick S2259p1, S2259p2), PMG 63 Choice Uncirculated, the sole examples in the PMG population report! (2)