14,950 CHF
Precision Timekeeper with 1 ComplicationO. Dumas, Successeur de Gannery, No. 126, circa 1851.Very fine and rare magogany 8 day-going marine chronometer with power reserve indicator. Three-body, mahogany with external brass handles, glazed upper section, the hinged lid with brass corners. Brass bowl and gimbal suspension. Frosted and silvered with Roman numerals, subsidiary seconds and up-and-down scale. Blued steel Breguet hands. Brass three-quarter plate with with main frame and sub-frame, conical pillars, fusee with chain and maintaining power, spring detent escapement, entirely fitted including the balance on a spotted finished platform, two-arm compensation balnce with cylindrical weights and timing screws, free-sprung blued steel helical balance spring with terminal curves.Signed on the dial and back plate.Dial diam. 110 mm.Dim. 18 x 17,5 x 17,5 cm. Notes According to the serial number, this chronometer is certainly one of the first produced by Onésime Dumas as the successor of Gannery.As opposed to 8 day-going marine chronometer movements produced in England, with a large frame for the fusee and barrel and a small sub-frame for the escapement, this chronometer is remarkable for its escapement which is mounted on the platform of the sub-frame, almost isolated from the rest of the movement and, as in Breguet chronometers, it can be removed as easily as the platform escapement of a carriage clock.
Auctioneer:
Antiquorum
Date:
2001-11-11
