Kan'ei Tsuuho 寛永通宝 Shin(New)-Kan’ei Tsuuho Type Maruya Sen 丸屋銭
Commonly known as Maruya Sen(丸屋銭)Many catalogs list the year of minting as the Shotoku period（正徳期）, but there are various theories regarding the actual minting date, and details remain unclear.
