View Image hkuang2a jpg 177 x 177 px - 18k Image may be subject to copyright. See image below at: ykleungt.tripod.com/ khsi-kt.htm This looks really close
Description Coin, China, Ming Dynasty (1368-1644). Chao Wu T'ung Pao, 1646, Cash, copper alloy (CI) The Registration Number of an object is a unique identifying number applied by the museum at the point of acquisition. Current numbering format comprises the year of acquisition, followed by a sequential number. For example, '2007/45' is the Registration Number that represents the 45th acquisition in the year 2007. Registration number N19289 I compared your coin to this one, and it is really close.
Qing Dynasty. Emperor Sheng Zu. Linqing garrison, Shandong. Kang Xi tong bao 1667-1675 Hartill 22.124, FD2264, S1425 Common, probably $5 or less.