Poland, 19th–20th centuries Material: gold, enamel, diamonds; brass mounting prongs Techniques: casting, cutting, engraving, enameling, stone setting, soldering A set of three decorative studs designed to be affixed to the surface of a luxury item—presumably a casket, a case, an album cover, a wallet, or a leather goods item. The largest clasp takes the form of an elaborate, openwork monog...