Coin

Normal sized circulating coin

Coin, round, with a four-sided hole at the centre, a rim around the outer edge and a centre hole. The obverse has four characters, and the reverse has two characters. Tongzhi tongbao (top-bottom-right-left) in Chinese characters on obverse; boo je left-right (mintmark) in Manchu on reverse. Crescent top reverse; file marks; rim pits; outer rim width not even.