Technical description: Model No. 691, with 0.77-inch bore and 30-inch bell. Brass; angled mouthpipe with slightly angled bit, ligature fixing for adjustment of playing angle. Final section of bell flare fitted to bell-pipe with flanged joint and secured with three screws with knurled heads, the bell mouth can be rotated to point in any desired direction or detached for convenience when not in use. With two water keys and fitting for music card holder.
Valve type: 4 Périnet valves, bottom sprung; alignment by key on piston.
Overall size: height c 1500, depending on orientation of bell; bell 764.
Bore: at distal end of mouthpipe 16.3; m.t.s. 19.6; v.t.s. (1,2,3,4) 19.6.
Dia of mouthpiece receiver: bit internal taper 14.6 - 13.7.
Inscribed on bell "THE / BUESCHER / ELKHART / IND / USA"; on sides of valve casings "1", "2", "3", "4"; on side of 2nd valve casing "231644 / LP / PAT.OCT.29.07" and trademark of bell with tuning fork above, within a triangle with wording "TRUE TONE / TRADE MARK / REGISTERED".
Decorative features: floral motif around inscription on bell.
Playing accessories: With slightly curved short bit, silver plated brass with no inscriptions.
Purchased by lender with mouthpiece (4458).
R. Parks 12.3.05.
height c 1500, depending on orientation of bell; bell 764.
ex- Ernst Buser collection.; on loan to the Collection.