Bach Trumpet. AB190S, Stradivarius "Artisan". Bb, Silver-plated finish. 0.459" bore, 4-13/16" diameter one-piece hand-hammered bell with flat rim, special acoustic bell treatment, enhanced radius ferrules, Monel pistons, 2 sets of valve guides-brass/plastic, 1st slide split ring, extended low F 3rd slide rod stop. deluxe engraving. C190DBL deluxe double case. NO mouthpiece.