Important Watches, Wristwatches and C...

Geneva, Hotel Des Bergues, Oct 31, 1998

LOT 37

Vacheron & Constantin, Geneve, No. 346636, case No. 185069, circa 1910. Fine 18K pink gold keyless lever chronometer. Bulletin de Premiere Classe de l'Observatoire Astronomique de Geneve awarded the First Prize for the timing contest in 1911 and the First Prize at the timing contest of the Kew Astronomical Observatory in 1911.

CHF 5,500 - 6,500

Sold: CHF 6,900

C. Four body, massive, "bassine ", polished. Hinged gold cuvette engraved with the awarded prize. D. White enamel with Breguet numerals and sunk subsidiary seconds. Gold "spade " hands. M. 19" ' giltbrass, 20 jewels, counterpoised straight line lever escapement, brass-invar Guillaume balance adjusted by G.M. Grandjean, Breguet balance spring with a worm screw micrometric index patented 1904. Signed on the dial, cuvette and movement. Accompanied by copies of the Observatory contest. Diam. 51 mm.


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Grading System
Grade: AAA

Excellent
Case: 2

Very good
Movement: *3

Good

Overhaul recommended, at buyer's expense
Dial: 2-01

Very good

HANDS Original

Notes

Timing Contest : - Mean average daily rate +/- 0,13 - Restart period - 0,02 - Error of compensation per degree C +/- 0,044 - Mean error in 6 positions +/- 0,15 With 811 marks, this chronometer was the 3rd out of 102 classified with more than 600 marks. The first one with 866 and the last one with 600, the maximum being 1000 marks.