Lecocq

Lecocq, Eleve du Gouvernement, Berthoud Professeur, No. 279, circa 1845. Rare and important marine chronometer, made in the Louis Berthoud style by one of the pupils of his son Charles Auguste Berthoud. Double body mahogany box with slide on the lid over the glazed observation aperture. Brass gimbal with a ladded bowl. Silvered regulator type, with small Roman chapter ring for hours, subsidiary seconds below, outer Arabic minute ring on the border of the bezel. Blued steel Breguet hands. Brass full plate, fully jewelled, with conical pillars secured by pins. Fusee with chain, maintaining power, spring detent escapement, three-arm compensation balance, with three trapezoidal weights and timing screws, blued steel helical balance spring. Signed on the dial. In very good condition. Dial diam. 80 mm. Notes A very similar chronometer by Auguste Louis Berthoud is described and illustrated by J.C. Sabrier in La longitude cum(?)] d 1'heure de Louis Berthoud et de Henri Motel, p. 315. Perrelet was in charge of the Ecole des Horlogers de la Marine since 1832, when he decided to resign in December 1839. Charles Auguste Berthoud was then appointed as his successor by the Ministre de la Marine, to complete the instruction of his pupils. Onesime Dumas was already there since 1837, but among the three other pupils, Louis Lecocq had just arrived in October 1839, therefore, he was almost entirely formed by Charles Auguste Berthoud. The calibre used for this chronometer, being of Louis Read more…