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Technical description: Brass with german silver garland, ferrules, shank/crook receiver sheath, finger-hook, and valve top caps and touchpieces. Valves in V-formation; 3rd valve tuning-slide directed forwards. With clapper key. Main tuning-slide proximal leg and 1st and 3rd valve tuning-slides with moving outer; distal leg and 2nd valve tuning-slide with moving inners. With 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 bow proximal 263; bell 124.5.; Sounding length: minimum 1264.; Bore: mouthpipe at c|40mm from mouthpiece/crook receiver (minimum bore) 10.95; main tuning-slide from 310mm to 497mm from mouthpiece/crook receiver, m.t.s bore 11.2; valve cluster from 547mm to 790mm from mouthpiece/crook receiver, v.t.s. bore (1,2,3) 11.05; at c|299mm from bell end, 15,65; at 17mm from bell end, 69.5.B|=|0.74.Bell cutoff |1400|Hz.Dia of mouthpiece receiver: m.r.t. 11.8 - 11.25.