民国三十一年中央银行水印档案照片一组3枚,PMG封套,有趣的一组. Central Bank of China, archival photograph for the watermark of the 1942 500 yuan, 3 design variations, with different placement of the 500 and Sun Yat Sens jacket collar,(Pick 251 for type), all in PMG holder. Interesting and rare (3)