Empire of JapanCupronickel 10 Sen Series大日本帝國白銅十錢系列Empire of JapanCupronickel 10 SenShōwa 4th era大日本帝國白銅十錢昭和四年AD 1929Provenance:Fuchin Coin 2020Empire of JapanCupronickel 10 SenShōwa 6th era大日本帝國白銅十錢昭和六年AD 1931Provenance:Fuchin Coin 2020