Important Watches, Wristwatches and C...
Geneva, Hotel Des Bergues, Oct 12, 1996
Construite par Berthoud Freres, No. 200, delivered to Capitaine Boulanger on 30 September 1830. Modif ie et regle par Vissiere. Rare and important marine chronometer, 32 hour power reserve, made in the Louis Berthoud's workshop, after his death
C.Double body mahogany box with slide on the lid over the observation aperture. Brass gimbal with a ladded bowl. Brass case en forme de tabatiere. D. Silvered regulator type, with small Roman chapter ring for hours, subsidiary seconds below, outer Arabic minute ring on the border of the bezel and Up-and-Down scale. Blued steel Breguet hands. M. Brass spotted finished, full plate with polished, fully jeweled, with steel conical pillars secured by nuts with washers. Fusee with chain, maintaining power, Eanushaw type spring detent escapement, two-arm armed compensation balance, with four cylindrical weights and timing screws, palladium helical balance spring with terminal curves and diamond end-stone. Signed on the dial and the back plate. Vissiere inscription on the dial. In very good condition. Dial diam. 80 mm.