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Valve trumpet.

Technical description: Brass with brass garland. German silver ferrules, bow guard and parts of valves. 2 coils.; Nominal pitch: F.; ; ; ; ; Usable pitch: Probably built for use at circa A?=|452.4|Hz.;

  • Measurements:Overall size: from plane of bell to bow proximal 357; bell 121.; Sounding length: minimum 1768.; Bore: mouthpipe at 28mm from mouthpiece receiver (minimum bore) 9.5; valve cluster from 38mm to 169mm from mouthpiece receiver, v.t.s. bore (1,2,3) 10.8; main tuning-slide from 440mm to 816mm from mouthpiece receiver, m.t.s. bore 10.75; at 884mm from bell end, c|11.2; at c|623mm from bell end, 15.85; at 10.8mm from bell end, 85.3.B|=|0.63.Bell cutoff |1400|Hz.Dia of mouthpiece receiver: m.r.t. 10.45 - 10.85 (reverse taper).