NAN MING: Li Yong, 1674-1678, AE 10 cash (16.38g), H-21.100, yi fen above and below on reverse, Very Good, S, ex Jiùjinshan Collection. Coins cast by the rebel Prince of Zhou, Wu Sangui, bear the inscription li yong (profitable use) instead of a reign title as Wu Sangui did not declare himself emperor until March of 1678 when he took the nien hao (reign title) of Zhao Wu, but he died in October 1678 of dysentery and no coins bearing the new title were cast.
Estimate: 60-80 USD