民国二十年中国实业银行壹圆正反面单面试样票一对,无编号及签名,PMG分别评63,有壁裂纹,及64,前美国钞票公司旧档,不曾于90年代该公司之拍卖会出现,罕见无打孔及加盖之样钞类别,稀品。The National Industrial Bank of China, obverse and reverse proof for 1 yuan, 1931, no serial numbers or signatures,(Pick 531p1, 2), PMG 63 (paper pulls), 64. Ex ABNC archive, these were not sold in the auction back in the 1990s. Scarce proof form without perforation or any overprints, scarce