Description6 valve independent pistons model.
Technical description: silver-plated brass ; water-key; adjustable rest for left hand to support instrument; fitting for music card holder. Valve type: 6 Périnet valves, bottom sprung; alignment by key on piston. Repair History: The proximal leg of the main tuning-slide is a replacement.
Overall size: Valve section 637; bell section 690; bell 161.
Sounding length: minimum 2756.
Bore: mouthpipe at c 45mm from mouthpiece receiver (minimum bore) 9.85; m.t.s. at c 579mm from mouthpiece receiver, tuning slide bores 11.8 - 11.9; at 1378mm from mouthpiece receiver, c 11.9; centre of 1st valve at c 1520mm from mouthpiece receiver, v.t.s. bore (1,2,3,4,5,6) 12.0; at c 440mm from bell end, 16.8; at 18.0mm from bell end, 89.5. B = 0.69. Bell cutoff = 1100 Hz.
Dia of mouthpiece receiver: m.r.t. 12.0 - 11.1.
Inscribed on bell: monogram DPL / six pointed star / 'D. & P. LEBRUN / R. DE LA PRÉVOYANCE 23 / BRUXELLES" / six pointed star; on side of 1st valve casing "D & P. LEBRUN / BRUXELLES" within ellipse with treble clef sideways in centre. |