Geneva, Nov 09, 2025

LOT 557

LONGINES, SWITZERLAND, IMPRESSIVE ''CHRONOMETRE DE BORD'', CALIBER 24.99, 50 HOURS POWER RESERVE, 18K YELLOW GOLD

CHF 10,000 - 20,000

HKD 98,000 - 196,000 / USD 12,500 - 25,000 / EUR 10,800 - 21,500 / JPY 1,900,000 - 3,800,000

Sold: CHF 13,750

A very fine, heavy, over-size and rare, 18k gold, manual wind open face, keyless deck and pocket lever Chronometer with Guillaume balance. Silver dial, subsidiary seconds dial at 6 o'clock, blue steel spade hands, with 50 hours power reserve indication (sector at 12 o'clock).


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Grading System
Grade:
Case: 2-8

Very good

Slightly scratched

Movement: 2*

Very good

Overhaul recommended, at buyer's expense

Dial: 2-10-01

Very good

Patinated

HANDS Original

Brand Longines, Switzerland

Model impressive ''chronometre de bord''

Year Sold in November 1912

Movement No. 2059731

Case No. 2059731

Diameter 66 mm.

Caliber 51 mm., 19 jewels, lever escapement, index-regulator with swan-neck spring and precision-regulating device for fast / slow by means of an eccentric snail, adjusted to 3 positions

Weight 254 gr.

Signature Dial, case and movement

Accessories Copy of Extract from the Archives and a copy of the Observatory Trials of Neuchatel from 1911.

Notes

Extract from the archives:
This chronometer was invoiced on 29 November 1912 to the company Leopold Bessire, which was at the time our agent for Belgium. It has obtained a Bulletin de Marche from the Observatory of Neuchatel.