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Post horn.

Technical description: Brass; straight, german silver rolled over bell rim; long german silver mouthpipe sheath.; Nominal pitch: 4½-ft B♭.; Usable pitch: Probably built for use at circa A₄=|460|Hz.

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  • Inscriptions:Stamped on bell "HY. KEAT & SONS / LONDON / MADE IN ENGLAND".
  • Hornbostel-Sachs category:423.121.12 End-blown straight labrosones with mouthpiece
  • Repository:Royal Conservatoire of Scotland
  • Measurements:Overall size: 1229; bell 106.; Sounding length: 1229.; Bore: at c|20mm from mouthpiece receiver (minimum bore), 8.3; at 615mm from bell end, c|12.0; at c|224mm from bell end, 17.0; at 16mm from bell end, 65.75.B|=|0.58.Bell cutoff |1500|Hz.Dia of mouthpiece receiver: m.r.t. 9.05 - 8.3.