Description
Issuer Japan Emperor Ninko (1817-1846) Type Standard circulation coin Years 1835-1870 Value 100 Mon = 1/40 Ryo (1/40) Currency Ryo (1601-1867) Composition Bronze (Cast, Cu 78% Pb 12% Sn 10%) Weight 20.7 g Diameter 49 mm Thickness 2.6 mm Shape Oval (With a square hole)