The Longitude at the Eve of the Third...

Geneva, Hotel Des Bergues, Oct 23, 1999

LOT 41

Winnerl, No. 433, circa 1845.Very fine and rare 18K gold, 32 hour going, early keyless pocket chronometer with power reserve indicator, in original fitted box.

CHF 30,000 - 35,000

Sold: CHF 43,700

C. Four body, massive, "forme quatre baguettes" by Jules Perot (Master mark), engine-turned, the back engraved with the monogram: "C.M.". Hinged gold cuvette. D. White enamel by Droz (signed on the enamel backing) with Roman numerals, subsidiary seconds and Up-and-Down sector. M. 18''', frosted and gilt three-quarter plate with cylindrical pillars, fusee with chain and maintaining power, spring detent escapement, two-arm compensation balance with gold wedged poising weights and timing screws, dimond end-stone, free sprung blued steel helical balance spring with terminal curves.Signed on the dial, cuvette and movement.Diam. 47 mm.


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Grading System
Grade: AAA

Excellent
Case: 3

Good
Movement: * 3
Dial: 3 - 01

Notes

Due to the difficulty in producing a stem winding system for a movement with fusee and chain, very few keyless pocket chronometers of this type were produced. This is certainly one of the earliest ever made.