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Technical description: Brass with brass garland, ferrules, shank/crook receiver sheath, finger-hook, and valve top caps; german silver touchpieces. Valves in V-formation; 3rd valve tuning-slide directed forwards. With clapper key. Main tuning-slide proximal leg and 3rd valve tuning-slide with moving outers; main tuning-slide distal leg and 1st and 2nd valve tuning-slides with moving inners. No fitting for music-card holder.; Nominal pitch: B♭ etc.; Type or system: Clapper key. Valve type: 3 Stölzel valves, metal partitions; alignment by key on spring capsule and flat-sided stem. Usable pitch: Probably built for use at circa A₄=|460|Hz.

  • Measurements:Overall size: from plane of bell to 1st valve tuning-slide bow 276; bell 118.; Sounding length: minimum 1259.; Bore: mouthpipe at c|30mm from mouthpiece/crook receiver (minimum bore) 11.35; main tuning-slide from 210mm to 448mm from mouthpiece/crook receiver, m.t.s bore 11.7 - 11.55 (sic); valve cluster from 556mm to 768mm from mouthpiece/crook receiver, v.t.s. bore (1,2,3) 11.45; at c|259mm from bell end, 16.2; at 17.85mm from bell end, 73.5.B|=|0.75.Bell cutoff |1200|Hz.Dia of mouthpiece receiver: m.r.t. 12.0 - 11.4.