Antique Round Serpent Brooch, Sterling Silver, popular Mexican, Early Taxco, Etched, Rattlesnake #BP275

This is a great early Mexican silver brooch with a cut out serpent. The snake popular is twisted into a knot. I think its a rattlesnake. Very cool design, nice large size brooch. Some tarnishing.
Measures 1 3/4 inches in diameter.
Marked Made Mexico, Sterling.