This is a Giardinelli 3D mouthpiece for large-bore trombones. This mouthpiece is a two-piece design, and this listing is for the cup and shank only. This is a so-called "old stamp" mouthpiece, with the manufacturer's name stamped as "GIARDINELLI NEW YORK." There are almost no scratches on the throat from insertion, and it appears to be unused. The condition of this vintage item is miraculous. Please check the photos for details.