The Longitude at the Eve of the Third...

Geneva, Hotel Des Bergues, Oct 23, 1999

LOT 40

Winnerl, France, No. 150, circa 1840.Very fine small, mahogany, 49 hour going marine chronometer with power reserve indicator

C. Double body solid mahogany, with sliding observation lid and external brass handles, brass bowl and circular gimballed suspension. D. Silvered with Roman numerals, subsidiary seconds and Up-and-Down scale. M. Spotted brass full plate with cylindrical pillars secured by screws, the back plate relieved for the barrel, fusee with chain and maintaining power, Earnshaw type spring detent escapement, two-arm balance with cylindrical weights and timing screws. Free sprung blued steel helical balancespring with terminal curves.Signed on the dial.Dial diam. 75 mm.Dim. 14,5 x 14,5 x 14 cm.