About this object

History of use

Large sized circulating coin

Physical description

Round, 4 sided hole in centre, rim around outer edge and centre hole, obverse 4 characters, 2 characters on reverse. Yumin tongbao (top-bottom-right-left) in Chinese characters on obverse; yi qian right-left (value) in Chinese characters on reverse. Rim pits, flaws; extra metal in centre hole.