This is an extremely rare and adorable celluloid mouse pin. We have not seen one sold with this color combination before, and we are not anticipating coming across it again. In nice vintage shape with expected wear from age, use, and storage. We love its little leather ears and raggedy tail. Its eyes are clear rhinestones. We saw a sale of a yellow mouse categorized as pote tially Bakelite. We did a 409 Bakelite test on its underside and the results were negative, so we have called it celluloid or early plastic. We want this little guy as our pet and so will you! Please see photos for more detail.