Marcinkiewicz 12C trombone mouthpiece, for a small bore trombone. Selling to organize my mouthpiece collection. It is clean with no scratches, stains, or dents. ■ Model: 12C small bore (equivalent to Bach 12C) ■ Specifications: Rim & cup are gold-plated (done at a musical instrument store upon purchase) ■ Purchased new, but I no longer have the box. ■ There are minor scuffs on the shank from inserting it into an instrument, but they are not noticeable. Thank you.