This is a Meiji era 20 sen silver coin concho. The size is approximately 22mm. I have processed this using circulated coins. As these are circulated coins, there may be wear and tear, and stains. I have polished them as cleanly as possible. The screw size is M4. The screw length is 4mm, but I will also include a longer 8mm screw. It is compatible with large jumper snaps. The photos are from a previous item. The item shipped will be of similar quality, with differences in the year, etc. Shipping will be via Yu-packet Post Mini. Thank you. #Leathercraft Material