Important Collectors’ Wristwatches, P...

Geneva, Mandarin Oriental Hotel Du Rhône, May 13, 2007

LOT 599

?Chronomètre de Bord, Observatory? Omega, ?Chronomètre de Bord, I.C.S.T. Min. 574?, No. 5337884, case No. 10294249. Made in a limited edition of 66 examples in 1919. Very fine and rare, large, silver, keyless deck lever chronometer with Guillaume balance.

CHF 7,000 - 9,000

EUR 4,500 - 5,500 / USD 5,700 - 7,500

Sold: CHF 10,620

C. Four-body, ?basssine?, polished, the back cover inscribed ?I.C.S.T. Min. 574?. Hinged silver cuvette. D. Matte silvered, painted Arabic numerals, outer minute track, large subsidiary seconds. Blued steel ?spade? hands. M. 44 mm., 21??? Observatory, frosted gilt, 21 jewels, large going barrel, straight-line lever escapement, anibal-brass Guillaume balance with gold and platinum screws, blued steel Breguet balance spring, sapphire endstone, swan-neck micrometer regulator. Dial, case, cuvette and movement signed. Diam. 60 mm.

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Grading System
Grade: AAA


Case: 3


Movement: 3*


Overhaul recommended, at buyer's expense

Dial: 3-01


HANDS Original


The 21??? Observatory and Marine Chronometer Calibers
These calibers allowed Omega to attain the ranks of the highest achievers in Observatory timing contests; they were also used in the 1st class chronometers offered to the general public. The present watch is from a series of 66 21 and 24??? ?Chronomètres de Bord Observatoire? produced in 1919 and comprising numbers 5337836 through 5337901. This watch was sold to the Swedish military on November 15, 1943, and was one of three watches specially ordered with a silvered dial. It is highly likely that it passed through an Observatory timing competition, due to the fact that the movement is numbered both on a bridge and on the pillar plate beneath the balance.