Counterfeit Coin Item Number: Edz3779 from the MOA: University of British Columbia
Round, 4-sided hole in centre, rims around outer edge and centre hole, obverse 4 characters, no writing on reverse. Dayuan tongbao (top-bottom-right-left) in Mongol characters on obverse; reverse rims partly missing. Reverse surfaces very smooth.
Large sized circulating coin, value 10