4 Mon
Released on the 15th of June 1768, the first 4 mon coins had "Kanei Tsuho" on the obverse and 21 waves (or Nami, in Japanese) on the reverse. Produced at the Kameido (or Fukagawa, depending on the source of information) mint in Edo, Musashi provice, these coins were made of brass and contained a 68:24:8 ratio of copper to zinc to tin. In 1769, the reverse design was changed from 21 waves to the more widely recognized 11 waves pattern. The production of these coins at the Kameido mint ceased in 1788, after which 157,425,360 coins had been produced. However, several other mints later commenced creating 4 mon, albeit with different alloys (which also gave them a different color, making them easy to tell apart). Iron issues were also produced from 1860 onwards, but these are covered on a different page.

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Mint Date Mintmark Catalog Number Inventory Number Shipping Weight Price Notes
Coin Picture Fukagawa 1769-1788 - H4.252/253 I1H4 0.2oz $1.99 23 available. SOLD OUT. The standard issue 'brassy' 11 wave 4 Mon, either normal or with a Fu Ei (drooping Ei). Price is for one coin! Not available on eBay
Coin Picture Fukagawa 1768-1769 - H4.251 I1H2 0.2oz $3.49 7 available SOLD OUT The standard issue 'brassy' 4 Mon, but with 21 waves instead of the regular 11. Price is for one coin! Not available on eBay