Japan, 1939 AD., Hirohito (Showa era), 10 Sen, KM Y 58.

Japan, Hirohito (Showa era), dated year 14 = 1939 AD.,
10 Sen (ø 22 mm / 4,02 g), aluminium-bronze, center hole, 4,00 g theor. mint weight, mintage 121.500.000 , medal alignment ↑↑ , plain edge,
Obv.: 本 日 大 / 年 四 十 和 昭 , double petal cherry blossom around center hole flanked by paulownia crest with issuer on top and Showa era date below.
Rev.: 錢 - 十 , chrysanthemum on top flanked by value with sun rays above center hole with rolling waves design below.
KM Y 58 .

Year / Mint Mark / Mintage
13 (1938) 46,999,990
14 (1939) 121.500.000
15 (1940) 165,000,000