明朝洪武通宝,背京十,铸自开国君明太祖在位年间,45.5x2.8mm,重25.4克,中乾80。China: Ming Dynasty, Hong Wu Tong Bao, 10 cash, (1368-1644), rev: Jing Shi (Jing Ten), Nanjing, 45.5x2.8mm, 25.4g, Zhong Qian 80. Hong Wu Tong Bao coins were issued by Zhu Yuan Zhang, the famous founder of the Ming Dynasty. . [190]