Important Watches, Wristwatches and C...

Geneva, Hotel Des Bergues, Apr 24, 1999

LOT 390

L. Leroy & Cie., Horlogers de la Marine, 7 Boulevard de la Madeleine, Paris, No. 2931, sold to Marquise de Flers in 1914. Very fine 18K gold keyless pocket lever chronometer, in original fitted leather box. Bulletin de Premiere classe de l'Observatoire National de Besancon No. 9234, in 1913. Awarded the Gold Medal with a total of 236 marks.

CHF 5,000 - 6,000

C. Three body, massive, "bassine", polished. Hinged gold cuvette engraved with the awarded prize. D. Two tone white enamel, with Roman numerals, outer minute ring and sunk subsidiary seconds. Blued steel "spade" hands. M. 19"', gilt brass with punch-mark in form of a viper's head set by the Observatory of Besancon, 20 jewels, brass-invar Guillaume balance adjusted by Grogg, blued steel balance spring with terminal curve. Signed on the dial, case and movement. Accompanied by copies of the timing certificates and by a Letter of Authentification from Maison Leroy. Diam. 53 mm.


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Grading System
Grade: AAA

Excellent
Case: 4

Fair
Movement: *3

Good

Overhaul recommended, at buyer's expense
Dial: 3-01

Good

HANDS Original

Notes

Timing Contest: - Mean average daily rate 2,52 - Error of compensation at 20° - 0,044 - Mean error in 2 positions - 0,29 - Restart period + 0,40 The punch mark in form of a viper's head is set by the Observatory of Besancon on watches successful at the contest and awarded the Bulletin de Premiere rlasse. With a total of 236 marks, this chronometer was among the best ever tested in The Observatory of Besancon; it was awarded the Gold Medal and missed the Cup, the highest distinction for less than fourteen marks.