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.


LOADING IMAGES
Click to full view Click to full view
Image Image

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.