I had to search with a magnifier to see any wear. Tests positive for Bakelite with Simichrome polish.
The item "RARE VINTAGE 1930'S MARBLED RED CARVED BAKELITE ARROW IN HEART BROOCH PIN" is in sale since Friday, January 26, 2018. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Costume\Bakelite, Vintage Plastics\Pins, Brooches". The seller is "deja--voodoo" and is located in Santa Cruz, California. This item can be shipped worldwide.