Japan, 1739 AD., Edo, Kan-ei Tsuho, Koume-mura mint, 1 Mon, KM C 1.6a .

Japan, Tokugawa currency, Genbun era (1736-41), Shogun Yoshimune (1716-45), Koume-mura / Edo (today Tokyo-to) mint, no date, ca. 1739 AD.,
1 Mon (24 mm / 3,14 g), (Kanei Tsuho, Koume-sen), cast iron, square center hole, medal alignment ↑↑ (0°), smoothed edge,
Obv.: 寛 永 通 寶 , "Kan'ei tsūhō", KAN 寛 - EI 永 - TSU 通 - HO 寶, top - down - right - left of center hole.
Rev.: 小 , mint mark "KO" of the Koume-mura ( 小梅村 ) mint above center hole.
KM C 1.6a .