略说安南“明命”、“绍治”、“嗣德”三种美号当陌钱郭若愚公元１８２０至１８４０年（我国清嘉庆二十五年至道光二十年）安南圣祖阮福皎“明命”年间，铸行“明命通宝”当陌大钱。钱背铸我国经传语，有四字者和八字者两类，名曰：“美号钱”。公元１８４１至１８４７年... Slightly say Annan “Ming Ming”, “Shaoji”, “Youde” three American brands when the strange money Guo Ruoyu AD 1820 to 1840 (China’s Qing Jiaqing twenty-five to Daoguang twenty years) Annan Shengzu Ruan Fu Jiao “Ming Dynasty” years, casting line “Ming Ming Tongbao” when a large amount of money. Money back cast my Chuan language, there are four characters and characters in two categories, the name reads: “American money.” AD 1841 to 1847 ...