Technical description: Boxwood; 5 sections; silver keys; 5 ivory ferrules plus cap; graduated, wood-covered tuning-slide; graduated screw-stopper; metal-lined head; oval embouchure-hole; overlapping low C/C♯ touches.
Keymount type: ring/knob.
Keyhead type: pewter plug, with metal-lined key-holes.
Repair History: Cap probably a replacement; B♭ key bent very close to body, probably for ease of sliding thumb.
Stamped "CLEMENTI & CO / LONDON / IMPROVED / PATENT". On head stamped with two snakes curled round a winged staff.
Overall size: 666mm
Sounding length: embouchure to foot, 594mm
Performance characteristics: Range C⁴ - A⁶.
Usable pitch: A⁴ c 438 Hz.