- Museum number
Full-plate; fusee; Harrison's maintaining power.
Lever escapement, false Savage-two-pin; gold balance.
White enamel dial, hours I-XII, sunk subsidiary seconds, signed. Possibly replacement, by Barraud's.
Gold hour and minute hands, seconds hand missing.
Later silver case; maker's mark in cameo. Pendant.
- Production date
1863 (hallmarked case)
1917 (hallmarked pendant)
Diameter: 53 millimetres (case)
Diameter: 45.70 millimetres (dial)
Diameter: 46 millimetres (movement)
Thickness: 20.90 millimetres
- Curator's comments
- Comment from Richard Good, Catalogue of Watches in the British Museum. Vol. V (Unpublished manuscript)
Made by Barraud's
London, c. 1820
Silver cased ratchet tooth lever watch with a wide impulse jewel.
Signature: 'Barraud's LONDON 9707' on the dial, 'Barrauds' 9707' on the back plate and 'Cornhill LONDON' on the barrel bridge.
Case: Later custom-made silver consular case with the London hallmark for 1923 and the casemaker's mark RGM(1) in cameo. The pendant is hallmarked 1917 and has a makers mark C.H in cameo. The case back and the inner back are numbered 9707. The bow also has a London quality mark. There is a pendant push button release for the outer cover.
Dial and Hands: A flat dial with a sunk subsidiary seconds dial. In the counter-enamel in red 'Exact'. The dial is secured by screws through the side of the dial plate. Gold beetle and poker hour and minute hands, the seconds hand is missing.
Dial-Plate: Screwed to the front plate, scratched on the plate is '9707' and an un-deciphered signature.
Ebauche Marks: 20 10
Frame: A full plate layout, the back plate supported by four turned pillars and secured by screws. The potence has a straight moulded foot. The plain balance cock is scratched 9707 on the underside. A fusee dust sleeve with a foot is secured to the back plate by a screw.
Fusee, Barrel and Mainspring:
Fusee: six-turn fusee with Harrison's maintaining power with a steel maintaining ratchet wheel.
Barrel: flanged at the cap end and recessed at the closed end; internal diameter 18.5 mm, height 4.70 mm.
Mainspring: height 4.15 mm, thickness 0.23 mm.
Barrel Arbor: diameter 6.00 mm, not snailed. The arbor is squared at the rear end above the barrel bridge.
Train: The train is gilded, the centre wheel is solid, the third and fourth wheels have five crossings. One tooth of the great wheel is badly bent and half broken.
Jewelling: Jewelled bearings for the escape wheel and the balance with ruby endstones. The potence jewel is in a wedge, the others in screwed settings.
Escapement: A right-angle layout ratchet tooth lever escapement with wide trapezoidal section impulse jewel. The enclosed pallet stones have convex acting faces except for the locking face of the exit pallet which is flat. The gilded escape wheel has three crossings. A pallet pivot is broken.
An equal impulse escapement.
No. of teeth embraced 32.
Balance & Spring: A rounded-rim, three-armed gold balance, diameter 21.6 mm, thickness 0.95 mm. A blued-steel flat spiral balance spring with 83 turns pinned to a brass stud screwed to the back plate.
Means of Regulation: A plain brass index on the balance cock registers against an applied silver scale on the back plate. Next to the scale the back plate is engraved 'Slow 5 10 15 Fast'.
Train Counts and Beat Rate:
Great wheel 60 (fusee)
Centre wheel 64 pinion 12
Third wheel 60 pinion 8
Fourth wheel 54 pinion 8
Escape wheel 15 pinion 6
Beat Rate: 16,200
Motion work: cannon pinion 12
minute wheel 48 minute pinion 14
hour wheel 42
Winding Mechanism: Key wound.
Case: diameter 52.5 mm, height 20.5 mm (over the glass).
Movement: diameter 46.0 mm, height 13.5 mm, pillar height 5.1 mm.
Provenance: Formerly in the Ilbert collection, purchased by Ilbert from Belk 14/7/33.
(1) The mark of Robert Gideon Macaire, watchcase maker of 26 Myddleton Street, Clerkenwell, see Culme, 1987, p.24, where the history of the firm of Ball & Macaire is outlined.
Watch No. 9714 is in silver pair cases hallmarked 1819.
Bibliography: Paul Philip Barraud, by Cedric Jagger London 1968 p. 144.
- Not on display
- Latest: 3 (2017)
- Acquisition date
- Britain, Europe and Prehistory
- Registration number
- Additional IDs
Previous owner/ex-collection number: CAI.1246 (Ilbert Collection)
Previous owner/ex-collection number: N61 (Ilbert Ledger)