China
Fuzhou, Fujian (Fukien). Emperor Wen Zong (1851-61) copper 100 Cash About XF, Hartill-22.784, FD-2526. 69mm/161.56g. 3 small chops on the obverse rim. Obv. Xian Feng Tong Bao. Rev. Yi Bai (100 Cash) Boo Fu. Nicer than normal for this large, scarce, issue, with bold details and the normal marks one would expect.
Estimate: 800-1000 USD