vintage ABALONE SHELL BUTTERFLY PIN

Pin is inlaid with abalone shell that is iridescent with blue, pink, green and amber color. This is on sterling silver in the shape of a butterfly and having silver antennas.  On the back are markings - 925 EB6 MEXICO and another marking, perhaps a signing. Also there is the eagle 3 mark of Taxco. This measures 1-1/4" x 1-1/2."

Very good condition. Tarnish spots on the back that can be cleaned.

Thanks for looking!