This vintage antique possibly no mark. OLD Swirl Pinwheel Brooch Pin features a classic design with a red garnet stone set in silver and brass. Handmade in the Retro era of 1935-1950, this 2" brooch is perfect for all occasions. The pinwheel shape and intricate details make it a unique and eye-catching piece of fine jewelry for women. With its vintage charm and natural gemstones, this original brooch would make a lovely addition to any jewelry collection.