After that, Kanei Tsuho was produced mostly in iron, and a great number of iron coins were minted in zeniza in Kameido, Fushimi, Ishinomaki and Ota City, Hitachi, Hitachi Province which were under direct control of kin-za.
これ以降、寛永通寳は鉄銭が中心となり、金座直轄の亀戸、伏見、石巻および常陸国常陸太田市などの銭座で大量の鉄銭が鋳造された。