1923年浙江兴业银行兑换券1、5、10元正反单面黑白试印票共3对,评PMG62-64,极少见。 The National Commercial Bank Limited, $1, $5 and $10, uniface obverse and reverse black and white die proofs on card, series of 1923, the famous Mandarin series,(Pick 517p1 to 519p), graded PMG 62 to PMG 64. A very scarce set that will complement the true colour specimen sets (3 pairs)