Antiquorum Auctioneers since 1974

Geneva, Nov 08, 2026

LOT 343

UNSIGNED, FRANCE, THE SAUTROG ESCAPEMENT, SMALL POCKET WATCH WITH EXPERIMENTAL CYLINDER ESCAPEMENT, 18K YELLOW GOLD

CHF 3,800 - 7,500

HKD 35,300 - 71,000 / USD 4,500 - 9,000 / EUR 4,000 - 8,000 / JPY 720,000 - 1,430,000

TO BE SOLD WITHOUT RESERVE

Sold: CHF 2,016

A very fine, rare and small, 18k gold, manual wind open face, key-winding pocket watch with a special cylinder escapement, white enamel dial, blue steel Breguet hands.

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Grading System
Grade: AAA

Excellent
Case: 3

Good
Movement: 3-6*

Good

Slightly oxidized

Overhaul recommended, at buyer's expense
Dial: 3-71-01

Good

ENAMEL AND VARIOUS TYPES OF DECORATION Hairlines

HANDS Original

Brand Unsigned, France

Model THE SAUTROG ESCAPEMENT

Year Circa 1770

Caliber 20 mm., two-bridge calibre, fully engraved, with Sautrog escapement.

Diameter 26 mm.

Weight 16 gr.

Accessories Accompanied by the original box, small gold chain and gold watch key.

Notes

The Sautrog escapement is illustrated in J. A. Lepaute’s ''Traité d’Horlogerie'', published in Paris in 1767, Planche XIII, Fig. 3. An extremely rare escapement.

The Sautrog escapement is a rare and early form of cylinder escapement, generally regarded as a precursor to the developed cylinder escapement. It is traditionally associated with Thomas Tompion, who is credited with having developed this form of escapement around 1695, before George Graham subsequently improved the construction around 1720–1725. The term “Sautrog”, literally referring to a trough-shaped recess, relates to the characteristic construction of the balance staff.