“Stradivarius” – 190 Series – Key of Bb, .459″ ML bore, standard weight body and lightweight one-piece hand-hammered #1 bronze bell. With a 5″ French-style bell rim and two-piece valve construction. A modified #43 leadpipe, Monel pistons and1st slide thumb ring. With lightweight brass outer and nickel-silver inner valve slide tubes. A forward facing 2nd valve slide. Crescent-shaped valve pull knobs, two main tuning slides standard – “D” shape and single radius, silver-plate finish.