Only Online Auction
Geneva, Dec 08, 2022
LOT 365
Unsigned
Pocket watch, centre-seconds; silver
CHF 700 - 1,400
EUR 750 - 1,450 / USD 750 - 1,500 / HKD 5,800 - 11,600
Silver, open-face, key-winding, round-shaped, pocket watch, with centre-seconds and special escapement.
Case-back polished; fluted case-band; glazed cuvette (dome).
White enamel dial, with radial Roman numerals; blued steel “Pear” hands.
Movement 20’’’, gilded brass, going barrel, duplex-Jacot escapement, uncut monometallic balance (probably polished steel) and blued steel flat hairspring, polished steel index-regulator.
| Grading System | |
|---|---|
Grade: A |
Good |
Case: 3 |
Good |
Movement: 3** |
Good Repair required, at buyer's expense |
Dial: 3-71-73-01 |
Good ENAMEL AND VARIOUS TYPES OF DECORATION Hairlines ENAMEL AND VARIOUS TYPES OF DECORATION Chipped under bezel,not visible when closed HANDS Original |
Brand Unsigned, probably Neuchâtel mountains
Year circa 1860-1880
Movement No. unnumbered
Case No. unnumbered
Material silver
Diameter 56.7 mm.
Caliber 20’’’, duplex-Jacot escapement
Weight 122 gr. (approx.)
Notes
Duplex-Jacot Escapement
During the last quarter of the 18th century, several watchmakers tried to produce watches with dead centre-seconds hands, much in favour among the scientific community. The first attempt, made in Geneva by Jean-Moïse Pouzait (1743-1793), circa 1786, featured a lever escapement associated with a large seconds-beating balance (the model of this escapement was presented to the local Société des Arts).
Due to its spectacular aspect, and in spite if its inertia sensitivity Pouzait’s escapement was much appreciated by the Chinese before the invention by Charles-Edouard Jacot (1817-1897), a watchmaker from La Chaux-de-Fonds (Neuchâtel mountains), circa 1840-1850, of the so-called duplex-Jacot or “Chinese duplex” escapement, with double-tooth arrangement. The Jacot escapement, like any duplex escapement, is a frictional one the friction from the escape wheel is constantly present. Enabled inexpensive production of dead centre-second watches it was often used in the watches made for the Chinese market.
CONDITIONS AND INFORMATION FOR BUYERS.
The purchase price payable by a buyer will be the sum of the final bid price plus the buyer’s premium, together with any applicable sales or compensating use tax. In addition to the hammer price, the buyer’s premium is payable as follows: 26% of the hammer price on each lot.
Please look carefully at all the photos as they are an integral part of the description. Any defect not mentioned in the descriptions but visible on the photos will be considered as described and cannot lead to any claim. The dimensions are given as an indication and may slightly differ from the measures mentioned by the manufacturers especially for contemporary watches. The photos are not retouched. Colors may differ from reality. For timepieces, we guarantee neither the functioning nor the precision of the movement, nor the water-resistance of the case. In addition, please note that movements, parts of mechanisms or cases may be incomplete.
The lots are sold “as is”, described to the best of our knowledge and cannot be returned. Once the online bid is placed by the bidder, it cannot be cancelled.