Important Collectors’ Wristwatches, P...

Geneva, Mandarin Oriental Hotel Du Rhône, May 13, 2007

LOT 695

Jarossay & Compagnie à Paris, circa 1850. Very fine and rare, pine and fruit-wood veneer, dead center seconds long duration wall regulator with worm-screw train, constructed after the patents No. 215 and 216 from October 16, 1844.

CHF 30,000 - 40,000

EUR 20,000 - 25,000 / USD 25,000 - 33,000

Sold: CHF 33,040

C. Rectangular, shaped base and the top, glazed hinged front door. D. white enamel, Roman numerals, outer minute/seconds divisions. Blued steel ?Breguet? hands. M. Brass, twin going barrels mounted on a large pulley set below the movement, barrels gearing with a fixed pinion allowing the pulley to turn and via endless rope, transmitting the power to a small pulley set on the first wheel of the movement constructed with Jarossay?s worm-screw train, pin-wheel escapement, wooden rod, cylindrical brass bob with micrometric adjustment,spring suspension. Signed on the dial and on the bridge linking the barrels. Dim. 134 x 32 x 17 cm.

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Grading System
Case: 3


Movement: 3*


Overhaul recommended, at buyer's expense

Dial: 3-436-01


HANDS Original


This clock was sold by Antiquorum, in the ?Art of French Horology? sale, November 14, 1993, lot 224
L. A. Jarossay One of the most inventive clockmakers from the middle of the 19th century, he was especially known for his research into worm-screw sear-trains. He took out a patent in 1844 on the subject and in again in 1850, on its application to clocks and regulators with the idea of reducing the costs of production.