ML bore .459“ = 11.66 mm Bell Ø 4 13/16" = 122,24 mm #43 bell with side seam, #25 mouthpipe One-piece hand-hammered bell with stainless steel ring Monel-pistons, two-piece valve casing brass/nickel silver Wide sculpted bracing Thumb ring on 1st valve slide, 3rd slide ring Vintage fingerhook, special engraving Incl. 2 sets of valve guides - brass/plastic Original VINCENT BACH 3C mouthpiece Deluxe wood shell case C180 Yellow brass, lacquered finish 190-43 Made in United States