This antique mourning brooch with a portrait in 18K gold plate is a stunning piece originating from the US during the 2nd Empire style in the late 19th century. The intricate design and craftsmanship make it a unique and original item, showcasing the exquisite work of J G Donovan And Co. The use of gold color adds a touch of elegance and sophistication to this piece, making it a valuable and timeless addition to any antique collection. Tests as 18k on Kee Gold Tester