This item is a family heirloom belonging to my grandfather.
It is a vintage Mexican Biker Souvenir Ring most likely manufactured in the 40s as it is in the earlier style of Mexican souvenir ring.
Features a central medallion and side charms.
It's made of alpaca silver (not silver but an alloy of copper, zinc and nickel) with bronze/brass, copper accent charms soldered on.
Moon like face on each side.