B&S 3137-S Challenger II S
B&S 3137-S Challenger II S, Bb Trumpet, Lightweight Stössl, Low noise plastic valve guides with concealed barrel-shaped spring guide, Special monel with self-lubricating properties, Saddle on the 3rd slide, One-piece valve housing, Split 3rd slide with ring, ""Educational slide stop"", Lower valve cover with integrated groove for drip protection, Single-piece bell with longitudinal seam, Bell edge beaded with nickel silver wire, 11.66 mm ML Bore, Bell diameter 125 mm, Outer slides nickel silver, Monel valves, Slide stop screw on 3rd slide, Two water keys, Silver-plated, Incl. mouthpiece and prestige case, Made in Germany
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