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Technical description: Gold brass with german silver mouthpiece receiver, ferrules, tuning-slide inner and outer slides, stay plates, etc. French rim; threaded rod to restrain main tuning-slide with maximum pull 57mm (adding up to 114mm to sounding length). With water-key and fitting for music-card holder, both on bow of main tuning-slide.; Nominal pitch: C|.|B?.; ; ; ; ; Usable pitch: Probably built for use at circa A?=|452.4|Hz.;

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  • Inscriptions:Stamped on bell with crown / "AHLBERG & OHLSSON / STOCKHOLM / ETABL. 1850 / KUNG. HOFLEVERANTÖR"; on bar on which action is mounted, some of above text; on bar underneath "6378"; on sides of rotor casings, some of above text.
  • Hornbostel-Sachs category:423.233.1 Valve trumpets with short air column (less than 2 m)
  • Repository:Royal Conservatoire of Scotland
  • Measurements:Overall size: from plane of bell to bow proximal 397; bell 125.; Sounding length: minimum 1178.; Bore: mouthpipe at c|40mm from mouthpiece receiver (minimum bore) 9.7; valve cluster from 83mm to 222mm from mouthpiece receiver, v.t.s. bore (1,2,3,4) 10.8; main tuning-slide from 222mm to 605mm from mouthpiece receiver, m.t.s. bore 10.8; at 589mm from bell end, c|10.8; at c|364mm from bell end, 11.5; at 15.7mm from bell end, 72.9.B|=|0.66.Bell cutoff |1400|Hz.Dia of mouthpiece receiver: m.r.t. 11.0 - 10.1.