Los Costillo Sterling Silver Donkey Brooch

Vintage sterling silver donkey pin is signed Los Costillo Taxco Hecho En Mexico 496 and an Eagle mark, and features a team of three linked pack mules.  The donkeys measure about 1 inch by a little over 1 inch wide, and when stretched out, the whole brooch measures 4 1/2 inches across.  It weighs 15.2 grams and it is in great vintage condition.