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Technical description: Copper bell and bent tubing; german silver mouthpiece receiver sheath, main tuning-slide, valve tuning-slide outers, valve parts, stays and ferrules; brass valve casings and knuckles; french bell rim. Main tuning slide can be pulled out for A, travel limited by screwed rod passing through a stay with restraining nut. Fitting for music-card holder.; Nominal pitch: B?|-|A.; ; ; ; ; Usable pitch: Probably built for use at circa A?=|455|Hz, the main tuning slide can be pulled out for lower pitches or for A.;

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  • Inscriptions:Stamped on bell with crown / "AHLBERG & OHLSSON / STOCKHOLM / ETABL. 1850 / KUNGL. HOFLEVERANTÖR"; stamped on upper side of support bar for the valve spring axle "5064" stamped on lower side of this support bar "STOCKHOLM" and "AHLBERG & / OHLSSON" AND "ETABL. 1850" with crown at either end, the "850" obscured; stamped laterally on the valve casings "STOCKHOLM" and "AHLBERG & / OHLSSON" AND "ETABL. 1850".
  • 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 mouthpiece receiver proximal 460; bell 123.5.; Sounding length: minimum 1309.; Bore: mouthpipe at 37mm from mouthpiece receiver (minimum bore) 9.65; valve cluster from 104mm to 219mm from mouthpiece receiver, v.t.s. bore (1,2,3) 10.8; main tuning-slide from 219mm to 643mm from mouthpiece receiver, m.t.s bores 10.8 - 10.85; at 655mm from bell end, c|10.8; at c|365mm from bell end, 15.25; at 14.5mm from bell end, 73.B|=|0.67.Bell cutoff |1500|Hz.Dia of mouthpiece receiver: m.r.t. 11.25 - 10.35.