186) Japan, Mother coin for Kanei Tsuho Kosuge iron coin

Mother coin for iron Kanei Tsuho, Kosuge-sen 小菅銭 (type Koniku 厚肉). Iron circulation coins casted Ansei 6 - Keio 3 (1859 - 1867) at Minamiayase-mura, Musashi. 3.64g, 24.98mm, Brass. Ex Mr. Jules Silvestre (French) Collection, gift from French Consulate in Yokohama, Japan, since year 1881. This example has never been used to imprinted mold for casting circulation coin, i.e. uncirculated.