This is an old vintage hard rubber Geo. M. Bundy mouthpiece for the soprano sax. This piece is stamped a 3 and measures .047”. It is all original and has never been worked on or refaced. It has a couple minor scratches on the beak and a few right on top from a previous ligature, but really is in outstanding shape physically. A great vintage hard rubber piece, plays with a darker, warmer sound.