DescriptionTechnical description: silver-plated brass; two water-keys and fitting for music card holder; auxiliary main tuning-slide between body and main tuning-slide providing up to c 140mm increase in aircolumn length. Valve type: 3 Périnet valves, top sprung by compression spring inside tubular stem; alignment by unequal legs on spring anchor plate.
Inscribed on bell "YORK / GRAND RAPIDS / MICHIGAN"; on side of 2nd valve casing and on stems "81458"; on side of valve casings "1", "2", "3".
Overall size: 471; bell 96.
Sounding length: minimum 1285.
Bore: mouthpipe at c 35mm from mouthpiece receiver (minimum bore) 9.8; m.t.s. at c 214mm from mouthpiece receiver, tuning-slide bore 11.0; centre of valve cluster at c 613mm from mouthpiece receiver, v.t.s. bore (3, 2, 1) 11.05; at 643mm from bell end, c 11.05; at c 265mm from bell end, 15.6. B = 0.70.
Dia of mouthpiece receiver: m.r.t. 11.4 - 10.6.
Decoration: Mother of pearl on buttons touch pieces; a stud on each valve tunning slide bow; knurled rings on buttons and valve top caps. |