Horatio De La Parra Vintage buying Mexican Sterling and Abalone Brooch / Pin

This vintage Parra brooch was made some time in the 1930's or 1940's in Mexico. It has a beautiful patina that really brings the color out of the abalone. The brooch is in good vintage condition and has a working straight pin with locking mechanism in back. This is hallmarked Hech En Mexico in a circle around 925 and PARRA. This piece measures 1 1/2 inches and weighs 8 grams. The pictures do not do this pin buying justice...