- Museum number
SILVER CASED LEVER WATCH.
Full-plate; fusee; Harrison's maintaining power.
Savage two-pin lever escapement.
Enamel dial; subsidiary seconds.
Gold spade hour and minute hands, minute hand not original; blued-steel seconds hand.
- Production date
- 1823 (case)
Diameter: 54.20 millimetres (case)
Diameter: 48 millimetres (dial)
Thickness: 22.70 millimetres
- Curator's comments
- Comment from Richard Good, Catalogue of Watches in the British Museum. Vol. V (Unpublished manuscript)
Made by James & William Reid
Silver cased ratchet tooth lever watch with a Savage fork and roller action.
Signature: On the dial 'REID LONDON', on the dust cap' REID. LONDON. No 2222.', on the back plate' REID Ball Alley Lombard Street No 2222' and 'LONDON' on the barrel bridge.
Case: Silver consular case with the London hallmark for 1824 and the casemaker's mark N.C in cameo.(1) The pendant also hallmarked London 1824. The inner cover is stamped with a letter 'T'. The bow is missing. Both the inner and outer cover shows signs of re-shaping following serious distortion in the case. Many repair marks scratched in the case.
Dial & Hands: Flat dial with a subsidiary seconds dial. Hair line cracks around the V position. Gold spade pattern hands, the minute hand not original. The blued-steel seconds hand is also not original.
Dial-plate: Scratched 'W. Sneezum' and in another hand 'January 1884' also with a monogram 'EAC 10' and 'ER'
Dust-cap: stamped 'I X R'.
Ebauche Marks: 20 6
Frame: Full plate layout, the back plate supported by four turned pillars. The balance cock with engraved foliate decoration on the foot. A comma shaped foot to the fusee dust pipe. Stamped 'WN' on the underside of the balance cock foot. The back plate is distorted in the area where the case has been restored to its original form.
Fusee, Barrel and Mainspring:
Fusee: six-turn fusee with Harrison's maintaining power and a steel maintaining ratchet wheel.
Barrel: Internal diameter 18.4 mm, height 3.9 mm.
Mainspring: height 2.9 mm, thickness 0.23 mm.
Barrel Arbor: diameter 5.5 mm.
Train: A high-quality brass train with gilded wheels, the centre wheel solid, the third and fourth wheels with five crossings.
Jewelling: Jewelled bearings for the fourth wheel onwards, the escapement with ruby endstones. A diamond endstone in the balance cock and a ruby endstone in the potence in a wedge. The pallet pivots are in plain holes.
Escapement: An obtuse-angle layout ratchet tooth lever escapement with a Savage two-pin lever, the unlocking notch badly marked. The pins on the roller much closer together than normal. Only the gold pin is original, the other two brass pins are replacements. The whole is in a poor state. The enclosed pallet stones have convex impulse and locking faces.
An equal impulse escapement.
No of teeth embraced 32.
Balance & Spring: A rounded-rim steel three-arm balance, diameter 22.1 mm, thickness 0.76 mm. A blued-steel flat spiral spring of 103 turns attached to a polished steel stud mounted on the back plate.
Means of Regulation: An index mounted on the balance cock with a regulation scale and 'Slow 15 10 15 Fast' engraved on the balance cock table.
Train Counts and Beat Rate:
Great wheel 66 (fusee)
Centre wheel 64 pinion 12
Third wheel 60 pinion 8
Fourth wheel 56 pinion 8
Escape wheel 15 pinion 7
Beat Rate: 14,400
Motion work: cannon pinion 12
minute wheel 48 minute pinion 14
hour wheel 42
Winding System: Key wound.
Case: diameter 54.0 mm. height 22.5 mm.(over the glass)
Movement: diameter 47.8 mm, height 17.0 mm, 4.5mm, pillar height 4.2 mm.
Provenance: Formerly in the Ilbert Collection. Purchased by Ilbert in Tottenham Court Road from Oetzsan? 31/1/1931.
(1) The mark of Nathaniel Valentine Crossland of 5 Lizard St, St. Lukes, London, registered at Goldsmiths' Hall 2.8.1822.
- Not on display
- Latest: 3 (2017)
- Acquisition date
- Britain, Europe and Prehistory
- Registration number
- Additional IDs
Previous owner/ex-collection number: CAI.1116 (Ilbert Collection)
Previous owner/ex-collection number: K54 (Ilbert Ledger)