Only Online Auction

Hong Kong, Mar 03, 2021

LOT 309

Vacheron Constantin
Large pocket chronometer, so-called “Deck-Watch”; silver

HKD 28,200 - 47,000

CHF 3,300 - 5,500 / EUR 3,000 - 5,000 / USD 3,700 - 6,100

Silver (0.925), open-face, keyless-winding, round-shaped, large pocket chronometer, so-called “Deck-Watch”, silver dial with large suspended Arabic numerals and subsidiary seconds at 6.

Movement 21’’’, lever escapement, cut bimetallic compensated balance with gold poising screws, index regulator with swan-neck spring and micrometric screw.

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Grading System
Grade: AA

Very good

Case: 3


Movement: 3 *
Dial: 3-01


HANDS Original

Brand Vacheron Constantin, Geneva

Model “Deck-Watch”

Year circa 1942-1943

Movement No. 444 775

Case No. 279 608 (by “FFBA”, Fédération de Fabricants de Boîtes Argent, S. Graber, Renan)

Material silver

Diameter 60.3 mm.

Caliber 21’’’, cut bimetallic compensated balance, index regulator with swan-neck spring and micrometric screw

Signature dial, case and movement



A “deck-watch” is a precision watch used on the deck of boats for navigational purposes (point reading) to avoid disturbing the proper functioning of the marine chronometer, which remains in a specific area of the ship (chronometer room or captain’s cabin).

For more information on this type of time-keeper, now a collector’s item, see Norbert Eder’s reference book.

· Eder, Norbert, Beobachtungsuhren, Deck Watches und Chronomètres de bord, Munich, Callwey Verlag, 1987 (216 pp.; similar watch on the cover).
· The Art of Vacheron Constantin, An Important Collection of 286 Watches, Clocks and Wristwatches, Geneva, Antiquorum Editions, pp. 200-201.


Guillaume Balance

The Guillaume balance is a compensated bimetallic balance, made of anibal (an alloy of steel and nickel) and brass, after the works of Dr Charles-Edouard Guillaume (1861-1938), with which the middle-temperature error is practically eliminated.

The middle-temperature error (or Dent’s anomaly), is the difference between the rate of a chronometer at the mean temperature and the average of the rates at extreme temperatures.

This type of balance was used by the horological manufactories since 1904.