B&S Challenger Trumpet BS31362-2-0
Key : C.
Series : X-Line.
Bore : .459" / 11,66 mm ML bore.
Bell : 4.803" lightweight yellow brass with French Bead.
Valves : 3 top-sprung hand-lapped Monel pistons.
Water keys : 2 lever-style, forged (main tuning and 3rd valve slide).
Finish : Clear lacquer or silver plated.
Case : Double hard wood-shell.