Vtg MX Sterling Silver Abalone Butterfly Brooch

Beautiful vintage Mexico Sterling silver & abalone shell butterfly brooch. The front side of the brooch is nearly all shell. Only small accent pieces of silver can be seen. Really gorgeous! The silver does have a heavy darkened patina on it, which I will leave for the new owner to decide if it should be polished brightly or not. Condition: Very Good Condition. Mark: "925" other markings can't be read Measures: Brooch Approximately 2" X 1-3/4"