前: A decorated dragon inside chained-dotted circle
铭文: (left, state name) 本 日 大 (sun-origin empire,
Dai Nippon/Nihon "Great Empire/land of the Rising Sun")
(right, year) 年 (三 或者 四) 治 明
年 = nengō (年)
3rd (三) or 4th (四) year of 122th emperor Meiji
明治 Meiji (period, 天皇 -tennō or Meiji the Great, 明治大帝 Meiji-taitei)
(his area 1 - 45 / 1867 - 1912, Mutsuhito, 睦仁)
(* 3 November 1852 – † 30 July 1912)
1st year starts on (his 1st day) 3 2月 1867
(Gregorian calendar, since 1873,
1 January started his 7th year)
(top-left, lower-left/right, spacers/dots) •
(bottom, value) 銭 十 五 (Sen go-jū, 50, fifty)
背面: Sun disk with 22 vertical lines, surounded by 76 rays
inside chained-dotted circle
铭文: (top, coat of arms) Imperial Seal
(upper-left/right) Paulownia flower of princess tree
边缘: G - grained, type: 杆
备注: There are two versions of the 1871 coin. In Japan, we call it “first period” and “late period”. I think it may be called Type A, Type B because it is difficult for foreigners to understand. Specifically, there is a difference in the kanji character "本" in "本日大". In Type A, the lower end of the vertical line of the "本" is bent.
