Metales Swimming Fish Themed Brooch in Sterling Silver Brass Copper

Modern design sterling silver, brass and copper brooch. It is a Metales piece. (Means marriage of metals) The design is swimming fish with bubbles.  Measures 2" by 1 3/8". Possble Mexican piece. Locking clasp. Weight: 15.4 grams. Lovely patina. No hallmarks. Acid tested.