Coin Item Number: Edz2824 from the MOA: University of British Columbia
Round, 4-sided hole in centre, rims around outer edge and centre hole, obverse 4 characters, dot and crescent on reverse. Kaiyuan tongbao (top-bottom-right-left) in orthodox Chinese characters on obverse; dot (right), crescent (top) on reverse. Irregular centre hole.
Normal sized circulating coin