Very cool vintage hard rubber Berg Larsen tenor sax mouthpiece, with a bigger-than-normal facing. This piece is stamped a 120/0 with offset SMS, but measures a bit under at .115”, as is so commonly seen on these vintage Bergs. The facing is original, and the mouthpiece shows only light typical wear from normal use. The shank has oxidized with time to a dark brown color, evidence of the quality hard rubber construction. There is no teeth wear/indents in the beak and only a couple ligature scratches around the body of the mouthpiece. Plays with a very powerful, edgy sound, just as you'd expect from a /0 chamber.