independent centre-seconds watch;
- Museum number
STAINLESS STEEL CASED CLUB-TOOTH LEVER CENTRE-SECONDS WRIST-CHRONOGRAPH WITH BLACK LEATHER WRIST-STRAP.
Movement with club-tooth lever escapement and independent centre-seconds chronograph.
Silver-coloured metal dial with outer circle for minutes 5-60 and 1/5th seconds; subsidiary dials on left for seconds and on right for chronograph minutes.
Luminous painted steel hour and minute hands; red-painted chronograph centre-seconds and minute hands; Arabic hour numerals 2, 4, 6, 8, 10 and 12 and dot marks for the odd numbers, also luminous painted.
Stainless-steel case with screw-on back; inside back is a 'Faraday box' for protection against magnetic interference.
Black leather wrist-strap with stainless-steel buckle.
- Production date
Diameter: 35.10 millimetres
- Curator's comments
- Comment from Richard Good, Catalogue of Watches in the British Museum. Vol. V (Unpublished manuscript)
Made by Movado
Switzerland, c. 1960
Wrist Watch with chronograph work and a club tooth lever escapement.
Signature: On the dial 'MOVADO SWITZERLAND' on the cock for the centre seconds and minute recording wheels is 'MOVADO SWISS MADE'.
Case: A stainless steel case with a screw back, inside this back is the following: two trade marks, one a key and FB in a rectangular cartouche and the other a hand holding a watch with 'STAINLESS STEEL INAL'. Also 'FABRICATION SUISSE MOVADO FACTORIES SWITZERLAND' and two numbers A 99729 and 19048. An inner back snapped on, with the dial forming a magnetic shield. The two pushers are biased outwards by strong springs set into the case band. The glass is cracked. The watch complete with a black leather strap with a steel buckle marked 'ACIER'.
Dial & Hands: The dial finished matt silver. Arabic numerals at 12, 2, 4, 6, and 8. Dots at the other hours, all luminised. The minute circle in black with the numbers 60, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, and 55 in red. Two sunk subsidiary dials, one at 9 o'clock for seconds and the other at 3 o'clock - the minute counting dial. On the back of the dial is the number 84 * 176
The baton hands are blued-steel and skeletonised filled luminous with the seconds hand also in blued-steel. The centre seconds hand and the minute recording hand in red.
Movement: The movement is set into an adaptor ring which carries two plungers to marry up with the pushers in the case. This ring also serves as part of the Farraday box.
Ebauche Marks: Under the balance cock on the front plate C:90 M. Under the dial on the front plate is the number 2377.
Frame: The basic movement has two bridges one for the barrel and keyless work and the other for the train. Cocks for the pallets and balance. The sub plate that carries the chronograph work also carries the cock for the centre seconds and minute recording wheels.
Barrel and Mainspring: A going barrel with a recessed cover
Barrel: internal diameter 10.8 mm., height 1.4 mm.
Mainspring: height 1.4 mm., thickness 0.12 mm.
Barrel Arbor: diameter 3.1 mm., snailed.
Hooking: pierced from the barrel wall.
Train: All the wheels gilded, the centre wheel, third and fourth wheels with five crossings. The steel escape wheel with four.
Jewelling: Jewelled bearings from the third wheel onwards, and an additional jewel for back pivot of the minute recording wheel, all the jewels pressed in. Ruby endstones to the balance jewels.
Escapement: A straight line layout club tooth lever escapement with short lever, double roller and D-shaped impulse pin. The exposed pallet stones have flat acting faces. A steel escape wheel with four crossings.
A mixed escapement.
No. of teeth embraced 3½.
Balance & Spring: a monometallic balance with gold screws. Balance diameter 10.40 mm., thickness 0.80 mm. A 'self compensating' flat spiral spring with 15 turns and a terminal curve.
Means of Regulation: An index on the balance cock registers against a divided scale with 'F S' and 'A R' engraved on the balance cock table.
Train Counts and Beat Rate:
Great wheel 72 (barrel)
Centre wheel 60 pinion 10
Third wheel 64 pinion 8
Fourth wheel 60 pinion 8
Escape wheel 15 pinion 6
Beat rate 18,000
Motion work: cannon pinion 8
minute wheel 24 minute pinion 8
hour wheel 32
Winding System: Conventional positive stem set keyless work.
Chronograph Work: The conventional chronograph work is mounted on a sub plate, which after loosening three blued screws, can be lifted off. A castle wheel operates the three functions start stop and return to zero. The sub plate carries the moveable wheel which has triangular teeth and meshes with the finer toothed centre seconds wheel when the chronograph work is brought into action.
Case : Diameter 35 mm., height over the glass 11.2 mm.
Movement: diameter 26.5 mm., height 7.5 mm.
Provenance: Purchased in 1989 with the aid of funds from the Dingwall Bequest
Note: All of the parts in this watch are finished to a high standard.
- Not on display
- Acquisition date
- Britain, Europe and Prehistory
- Registration number