民国十年中国劝业银行壹圆。样张。ABNC 印刷。 蓝色序号,红色样张加盖,双注销孔。CHINA--REPUBLIC. Industrial Development Bank of China. 1 Yuan, 1921. P-491s. S/M#C245-1. Specimen. PMG Gem Uncirculated 65 EPQ.Printed by ABNC. Blue serial numbers, red specimen overprint and dual punch holes.From the Prosperity Collection.