Important Modern and Vintage Timepieces.

Geneva, Nov 13, 2010

LOT 350

Leroy & Cie - Bulletin 1st Classe ? Gold Medal ? 217 Points L. Leroy & Cie, Horlogers de la Marine, 7 Bd. De la Madeleine, Paris, "Bulletin de 1ere Classe, 217 points, Medaille d?Or", No. 16891. Made circa 1910. Very fine, 18K yellow gold, keyless pocket lever chronometer with Guillaume balance, obtained First Class rating at Besançon Observatory timing contest with 217 points and a Gold Medal.

CHF 2,000 - 3,400

USD 2,000 - 3,400 / EUR 1,500 - 2,500

Sold: CHF 2,250

C. Four-body, ?bassine?, polished, the back cover engraved with initials ?RH?, the interior with engraved presentation inscription. Hinged gold cuvette engraved with the chronometer trial details. d. White enamel with Arabic numerals, outer minute track, subsidiary seconds dial. Gilt hands. m. Cal. 18 ½???, matte gilt, stamped with the Besançon viper?s head mark, 17 jewels, wolf?s tooth winding, straight-line lever escapement, anibal brass Guillaume balance, blued steel Breguet balance spring, index regulator. Dial, case, cuvette and movement signed. Diam. 49.5 mm.


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Grading System
Grade: AA

Very good
Case: 3

Good
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 2-04

Very good

HANDS Later

Notes

The punch mark in form of a viper's head is applied by the Observatory of Besançon on watches that were successful at the timing contest and received the Bulletin de Première classe.