These devices were salvaged and recovered off the coast of Panama from a shipwreck dating back to the 17th century (some of them still have coral on them). Carbon dating and microscopic analysis indicate that they were crafted into some sort of key using scraps from old boat bells. It is unknown what their original purpose was but they work great for unlocking the most important thing: a bottle of west coast IPA.
Made from 100% antique brass, with hand cast branding.