The Longitude at the Eve of the Third...

Geneva, Hotel Des Bergues, Oct 23, 1999

LOT 33

Lecocq, Elève du Gouvernement, Berthoud Professeur, circa 1840.Fine fine and one of the extremely rare examples of mahogany two day going marine chronometer, made under the control of Charles-Auguste Berthoud.

CHF 18,000 - 22,000

C. Double body solid mahogany, with sliding observation lid, brass bowl and circular gimballed suspension. D. 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. M. Brass full plate with cylindrical pillars secured by pins, fusee with chain and maintaining power, spring detent escapement, three-arm compensation balance with trapezoidal poising weights and timing screws. Free sprunglued steel helical balance spring.Signed on the dial.Dial diam. 80 mm.Dim. 15,5 x 16,5 x 16,5 cm.


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Grading System
Grade: AAA

Excellent
Case: 4

Fair
Movement: * 4 - 7
Dial: 4 - 5 - 01

Notes

The suspension of this fine chronometer is made in such a way that it is easy to remove the bowl containing the movement.Louis Lecocq with Onésime Dumas, was one of the six pupils, placed by the Government, in 1837 with Perrelet, then in charge of the Ecole des Horlogers de la Marine since 1832. When Perrelet decided to retire in December 1839, Charles-Auguste Berthoud was appointed as his successor by the Ministre de la Marine to complete the instruction of his pupils. Therefore, the very first chronometers produced by Louis Lecocq were very similar to those made by Louis Berthoud and later by his two sons.