Vintage Coro Jewellery
Coro, short for Cohn and Rosenberger, was a prolific American costume jewellery company which operated from the early 1900s until 1979. They competed with Trifari for control of the American costume jewellery market with the two companies often releasing similar designs. Their most collectible pieces today are the Duettes brooches which come apart to make two pins. The Vendome and Corocraft brands also fall under the Coro umbrella.