This is a concho made from a Mexican 5-peso coin. It is not a silver coin, but a cupronickel coin. The design features a stylized eagle with a snake in its beak, which is the national emblem. It is made using a circulating coin. The photos are reused, so the year may vary. The back is Chicago screw-mounted, and it is approximately 33mm in size. The screws are M4 and 5mm long. 8mm screws are also included for thick leather. Compatible with large jumper snaps. Thank you.