B&S 3137-S Challenger I Bb-Trompete S

B&S 3137-S Challenger I S, Trumpet, Light metal Stössl -weight-saving, Low noise plastic cross guide with concealed barrel-shaped spring guide, Special Monel with self-lubricating property, Stop nut on the 1st valve slide, Valve body in one piece, Divided 3rd valve with ring (see also Fig. 3), Fixable tension fastener ...