This is a very rare hard rubber New York vintage Meyer Bros mouthpiece for the tenor sax. This piece is a 5M, measuring .063" all original, but is very rare because it has a large chamber, giving the piece an overall darker quality. The overall sound of this mouthpiece is very reminscent of a Slant Sig Otto Link. The piece has a couple light indentations in the beak and a little wear around the rails, but nothing that affects the way it plays. A great NY vintage Meyer.