C-Trumpet Challenger II, Handhammered one piece bell,
Boxed bronce springs, Challenger Monel pistons,
Nickel silver outer slides, Stopper at the 3rd valve slide,
Bell and leadpipe in Sterling silver (925 Ag),
Equipped with regular-and heavy bottom caps
Bore: 11.73 mm (0.462") CL, Bell diameter: 121 mm (4.782")
;)