Japan. Tokugawa Shogunate. Sendashiden, Fukagawa. (1769-1788) Edo period, Masuashi Province. AE 4 Mon. (about 5g; about 28mm) 11 Waves Kan'eitsuho 寛 寶 通 永. Brass alloy, Meiwa [Brassy] (68% Cu, 24% Zn, 8% Sn). Hartill#2.252-3. $14 each