Important Modern & Vintage Timepieces

Geneva, May 14, 2017

LOT 495

"40-HOUR DECK CHRONOMETER" Dumas, Depot De La Marine, No. 66. Made circa 1840 under the direction of Henri Motel. Very fine and rare, marine deck Chronometer with spring footed-detent and 40-hour power reserve.

CHF 2,000 - 4,000

HKD 16,000 - 32,000 / USD 2,000 - 4,000

Sold: CHF 3,750

Three-tier mahogany deck box, the upper section with a numbered bone plaque, brass case en forme de tabatière secured inside the mahogany box, screwed- down brass bezel. Matte silvered, radial Roman numerals, outer minute track, subsidiary seconds, power reserve sector below 12. Blued steel Breguet hands. Brass, three-quarter plate, "spotted" decoration, reverse fusee and chain, Harrison's maintaining power, the barrel under a separate bridge, Earnshaw-type Chronometer escapement , spring footed-detent, two-arm cut bimetallic compensation balance with sliding cylindrical temperature weights and meantime adjustment screws, free-sprung blued steel helical balance spring, diamond endstone.

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Grading System
Grade: A


Case: 3-8


Slightly scratched

Movement: 3-8*


Slightly scratched

Overhaul recommended, at buyer's expense

Dial: 3-6-7-01


Slightly oxidized


HANDS Original


Dial and movement signed, case numbered. DIM. 11.5 x 10 x 6.7 cm.