Vintage Made In Japan Orange Brown Clear Plastic 11cm x 3cm Guitar Pin Brooch VG

This item is used but in very good condition. Nothing is loose or missing. I believe it's plastic. There are no brand or maker's marks, only "Made In Japan" on the metal pin. There is a small hole at the top, I assume to convert it to a pendant? It measures approximately 11cm x 3cm. It will come with a gift box.