You're looking at a beautifully polished, genuine pre-war Japanese coin Concho. Unlike cheaper alternatives, this Concho has been fashion from an genuine pre-war Japanese coin and is not a reproduction. This coin was in production in Japan between 1916 to 1937.
This item is extremely hard to find elsewhere and adds a unique flare to your leatherwork, use it to cover jacket buttons, wallet flap snaps, cuff links and more! Comes complete with screws and back-mount.
The background grid shows 1cm squares.