50 Yen Japanese coin minted from 1967 to the present. Your coin reflects the Showa year 49. The Shōwa period, or Shōwa era, is the period of Japanese history corresponding to the reign of the Shōwa Emperor, Hirohito, from December 25, 1926, through January 7, 1989; ergo: 1974. (as shown here: http://seinenkai.com/articles/dates.html)
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