3 LOS CASTILLO MEXICAN STERLING SILVER BROOCHES: 1) Clam form with obsidian fish and coral, there is partial loss of the coral. Backstamp for Los Castillo Taxco 19A 925, 2 3/4'' 2) Pendant brooch harboring a stone, marked Los Castillo Made in Maxico 925 S. Hangs 2 1/2'' 3) The third piece in leaf form is unsigned, 3'' overall.