r/JapaneseCoins

Never seen one of these before, just wondering if it looks kosher.

TLDR: got a coin recently, not sure if it’s genuine. Concerned about the edges. (This is not my first Edo bar coin, just haven’t learned the series yet.)

Greetings, I recently acquired this 一分銀 (maybe Tenpo era?) and was curious as to what you guys thought about it in terms of authenticity. It seems to have some decent hallmarks of the Tenpo era stuff according to the rectangle coins website; weakness of details on obverse between 一 and 分, properly inverted sakura, weight, and the like.

One thing I have concerns about is the edge. While it appears there are validation marks (on all four sides), I am not sure if it is supposed to be otherwise smooth. I’m also not sure if it is supposed to have validation marks on all four sides.

Let me know what you guys think, I am interested in hearing your thoughts. Thank you for your time!

(Re-uploaded because I forgot to add the pics lol)

Found in my grandparents house

I have had this coin identified as a 1 Mon Kan'eitsūhō by other members of this community and was referred to Numista. However, while researching I discovered that there were various mint producing these coins. By using photos and descriptions I believe that my coin is a Shiba-sen, but I may be incorrect although it matched the description of a Shiba-sen. If anyone knows the correct name or mint it was produced at, please feel free to let me know.

I was recently researching my 1 Mon Kan'eitsūhō and stumbled across Numista. When looking through the 1 Mon Old Type page, I noticed the image of a coin as the main icon and was wondering what mint it was from. My coin looks exactly like it, but the image is not listed as a named one.

Just returned from a coin show, where I picked up a provincial 100 Mon piece to complete a set of two!

These coins were casted in the Kubota Domain, which was under control of the Satake Clan. The production took place between 1862 and 1864 at the Kagoyama Refinery, which was located in the now-defunct town of Ani.

The coins are made of copper-coated lead and are of a crude manufacture. I’m very happy to have them both and am now looking for a Nami-sen to finish my set of non-silver Akita provincial pieces.