40,250 CHF
Berthoud Frères, No. 215, circa 1818. Rare and important marine chronometer, made in the Louis Berthoud's workshop, after his death, under the direction of Henri Motel. Double body mahogany box with slide on the lid over the glazed observation aperture. Brass gimball with a ladded bowl lined with velvet. Brass case en forme de tabatière. Silvered regulator type, with small Roman chapter for hours, subsidiary seconds below, outer Arabic minute ring on the border of the bezel. Blued steel Breguet hands. Frosted and gilt, full plate, fully jeweled, with conical pillars secured by nuts with washers. Fusee with chain, maintaining power, pivoted detent escapement, three armed compensation balance, with three trapezoidal weights and timing screws, blued steel conical balance spring. Signed on the dial, the back plate and the dial rim. In very good condition. Dial diam. 80 mm. Notes However made after his death, this chronometer is identical to that produced by Louis Berthoud as soon as 1800. This chronometer is described and illustrated by J.C. Sabrier in Les longitudes à l'heure de Louis Berthoud et de Henri Motel, to be published in spring 1993.
Auctioneer:
Antiquorum
Date:
1992-10-17
