Geneva, May 15, 2023
LOT 254
BULLETIN DE PREMIERE CLASSE
CHF 2,000 - 4,000
EUR 2,100 - 4,100 / USD 2,300 - 4,600 / HKD 17,700 - 35,400
Sold: CHF 8,125
Very fine 18K. gold keyless watch with split seconds chronograph with instantaneous 60 minute recorder. Awarded a 1st. class Bulletin at the Observatory of Besançon (“viper’s head” stamp on the movement).
Split seconds chronograph with visible work, push pieces on the crown and the band.
Split seconds chronograph with visible work, push pieces on the crown and the band.
| Grading System | |
|---|---|
Grade: AAA |
Excellent |
Case: 3 |
Good |
Dial: 2-70-01 |
Very good ENAMEL AND VARIOUS TYPES OF DECORATION Hairline HANDS Original |
Brand L. Leroy & Cie, Switzerland
Year 1911
Movement No. 18247
Case No. 18247
Material 18K yellow gold
Diameter 51 mm.
Caliber 18''', 21 jewels, frosted gilt, bearing the “viper’s head” mark from the Observatory of Besançon, 21 jewels, straight line lever escapement, brass-invar Guillaume balance, blued steel balance spring with terminal curve.
Signature Dial, case and movement
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.