Technical description: Unusually large body and bore of rather clumsy (provincial ?) design, with branches angled to bring valve touches close to fingers. Valves with rack and pinion adjustment to tuning-slides. Windway runs: crook receiver - m.t.s. leg - 2 - 1 - m.t.s. leg - bell. Metal construction: yellow brass; joint between bell segment and intermediate segment is butt-joined, apparently with a sleeve inside some 20 long; seamed tubing, with single seamed bell and broad garland, width 40. Tuning-slide has both male sections on slide, female on instrument body. Valve type: Two detachable Stölzel valves. Pistons not accessible. First valve two-semitone, second valve semitone.