Counterfeit ? Coin

Small size circulating coin. Possibly contemporary counterfeit

Round coin with a four-sided hole in the centre, and a rim around the outer edge and the centre hole. The obverse has four characters, and the reverse has two characters. Kangxi tongbao (top-bottom right left) in Chinese characters are on the obverse; jang left in Manchu, zhang right in Chinese (mintmark) are on the reverse. Holes in all fields; rim irregular at the top-right; very thin.