1 yen 1948, brass, weight - 3,2 g., size - 20 mm, mintage - 451170000 hcs. Such coins were released at 1948-50. Demonetized at December 31 1953.
I am also a pretty big Japanese coin fan, particularly of the Meiji-era dragon coins. 1 Yen Meiji Year 36 (1903) NGC MS 61 一円 明治三十六年 1/2 Sen Meiji Year 18 (1885) PCGS MS64RD 半銭 明治十八年 50 Sen Meiji Year 42 (1909) NGC MS 63 五十銭 明治四十二年 5 Rin Taisho Year 8 (1919) NGC MS 64 RD 五厘 大正八年 1 Rin Meiji Year 7 (1874) NGC MS 64 RB 一厘 明治七年
Beautiful coins everyone. I own only 2, both circulating commemoratives, showa 39 (1964 Olympics) The 100 yen is .600 silver and the 1000 yen is .925
50 sen 1946, brass, weight - 4,5 g., size - 23,5 mm, thickness - 1,2 mm, mintage - 268161000. Such coins were released at 1946 and 1947 (but coins with the date "1947" weren't released to circulation).