This appears to be a coin from Egypt, details unknown. It's approximately 25mm in size. I have modified a circulating coin into a concho. The screw size is M4, with a length of approximately 5mm. An 8mm screw (longer) is also included. Please use it on thick leather. Compatible with large jumper snaps. The photos are from a previous listing; you will receive a similar item. Shipping will be via Yu-Packet Post Mini. Thank you. #Leathercraft Material