NAN MING: Yong Li, 1651-1670, AE cash (5.59g), H-21.81, seal script, VF, ex Adam Yeung Collection. This type is attributed to Koxinga (Zheng Chenggong), the Chinese Ming loyalist who resisted the Qing conquest of China in the 17th century, fighting them on China's southeastern coast. In 1661, Koxinga defeated the Dutch outposts on Formosa, and established a dynasty which ruled the island as the Kingdom of Tungning from 1661 to 1683. These coins were likely cast for Koxinga in Nagasaki, Japan for use in Taiwan.
Estimate: USD 100 - 150