- Museum number
Turkish market watch.
Enamel dial with Turkish numerals.
- Production date
Diameter: 46.80 millimetres (case)
Diameter: 34.90 millimetres (dial)
Thickness: 16.40 millimetres
- Curator's comments
- Comment from Richard Good, Catalogue of Watches in the British Museum. Vol. V (Unpublished manuscript)
Made by George Favre.(1)
Constantinople and Le Locle, Switzerland, c. 1900
Silver cased watch for the Turkish market with club tooth lever escapement.
Signature: On the dial "K SERKISOFF & Co CONSTANTINOPLE" in gold, with above a polychrome garland of flowers. On the front plate, visible from the back, an inscription in Arabic.(2) On the back plate written in a garter is "BILLODES" enclosing a trade mark(1) and on the barrel bridge click cover is also "BILLODES".
Case: A silver hunter case. In the outer back there is the cockerel; a Swiss quality mark, and 0.800 and a garter with "BILLODES" within it and enclosing a trade mark1. Under the garter is "REGISTERED". There are fake hallmarks and two numbers 0542 and 2066. In the front cover this is all repeated with the the number 0542 replaced by 2790542. In the base metal inner back cover is "METAL" and "Y" and the numbers 2066 and 2790542 again. The inner back is pierced for winding and handsetting.
The case band is reeded and numbered 2066. The front and back covers are engine turned, this is now badly worn. The front cover has a shield at its centre. Both the band and the pendant bear the cockerel quality mark.
Dial and Hands: The dial with "Turkish" chapters with a sunk subsidiary seconds dial. Above the name, which is in gold, is a garland of flowers, in green, red and gold. A gold rim around the minute circle. Blued-steel spade hands and a blued-steel seconds hand.
Ebauche Marks: 7282
Frame: A bridge for the barrel and centre wheel with cocks for the third , fourth and escape wheels and cocks for the pallets and balance. A subsidiary bridge covers the barrel ratchet wheel and the click and its spring. The cocks numbered 2.
Barrel and Mainspring:
Going barrel: I. diameter 14.0 mm., height 2.7 mm
Mainspring: height 2.5 mm., thickness 0.19 mm
Arbor: diam 4.3 mm., snailed.
Hooking. A pressed in tongue.
Train: Brass wheels gilded on one side with five crossings except for the steel escape wheel which has four.
Jewelled: from the third onwards. Non-functioning endstones in the third, fourth, escape wheels and lever cocks set in polished steel caps. The jewel that was in the cap for the third wheel is missing. The jewels rubbed in.
Escapement: Club tooth lever, straight line layout, long lever, single roller, impulse pin elliptical. Pallet stones covered and convex on both the impulse and locking faces. Escape wheel of steel, the teeth chamfered. The lever with a poising extension.
A mixed escapement.
Number of teeth embraced 3½
Balance and Spring: Monometallic nickel balance with brass screws, balance diameter 13.2 mm., thickness 1.0 mm. Blued-steel flat spiral spring with 10 turns.
Means of Regulation: Index on the balance cock registering against a divided scale with engraved 'AVANCE RETARD'
Train Counts and Beat Rate:
Great Wheel (barrel) 80
Centre wheel 64 pinion 10 (Both the centre and the third wheels now soldered on)
Third wheel 60 pinion 8
Fourth wheel 60 pinion 8
Escape wheel 15 pinion 6
Beat rate 18,000
Motion work: Cannon pinion 10
Minute wheel 30, minute pinion 8, hour wheel 32
Winding System: Keywound
Dimensions: Case diameter 46.8 mm., height 16.3 mm
Movement: diameter 38.3 mm height 10.0 mm
Provenance: Purchased 1969.
(1) See the Clock and Watch Trademark Index by Karl Kochmann, Concord 1988 p.588 where this mark is credited to George Favre
(2) This is the name of the Company as on the dial.
- Not on display
- Latest: 3 (2017) monitor for weeping
- Acquisition date
- Britain, Europe and Prehistory
- Registration number