This is a Bach 39 Alto Trombone in original lacquer. It features a .468-inch bore and a lightweight nickel outer handslide for quick response. This horn also features a 6.5" one-piece, hand-hammered gold brass bell for superior projection and a rich, warm sound. Well in tune with a beautiful singing sound, it comes in the key of Eb. Includes a case and mouthpiece. This horn is in fantastic shape, and really shows no signs of damage. Slide moves freely, and pitch is outstanding. Would be ideal for orchestral settings. Serial number is 25138.