16,250 CHF
BERTHOUD PRECISION LEVER CHRONOMETER Auguste Louis Berthoud, No. 19. Made circa 1860. Extremely fine and very rare, large and heavy, 18K rose gold pocket lever chronometer with fusee and helical balance spring. Four-body, bassine, mastermark JG, polished, the back engraved with a foliate monogram, olive-shaped pendant. Hinged gold cuvette engraved “César Jolly, Argenteuil, 1866”. White enamel by Droz, radial Roman numerals, outer minute track, subsidiary seconds. Blued steel Breguet hands. 50 mm., matte gilt, half-plate, fusee and chain, maintaining power on the fusee, 12 jewels, counterpoised and calibrated straight-line lever escapement, cut bimetallic compensation balance with gold temperature and meantime adjustment screws, blued steel helical balance spring with inner and outer terminal curves, index regulator, winding with female arbor. Dial and movement signed, dial signed on the counter-enamel “Droz”. Diam. 58 mm. Notes Auguste Louis Berthoud Born in 1828 in the Rue de Richelieu where his father Louis Simon Henri had his workshop and shop. A chronometer maker in the family tradition, Auguste Louis’s chronometers were heavily infl uenced by the work of his grandfather Louis Berthoud. He was the author of a great number of articles concerning the history of horology and in particular some remarkable biographical notes of the great clockmakers published between 1900 and 1905 in the review l’Horloger. Auguste Louis Berthoud died in 1910 at Ivry-sur-Seine.
Auctioneer:
Antiquorum
Date:
2011-11-13
