Trobenta Holton Bb ST307 MF-Horn

468" bore (11,89 mm) Brass bell: 5" (127,00 mm) One-piece brass leadpipe Thumb hook on 1st valve slide Finger ring with slide stop on 3rd valve slide Mouthpiece: 7C Deluxe wood shell case Reversed leadpipe, Nickel silver outer slides Lacquered finish 703.510