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Hotel Nogalhilton Geneve, Nov 11, 2001

LOT 320

Breguet No. 873, "Garde-Temps", circa 1840.Very fine and interesting slim 18K gold astronomical pocket chronometer with phases and age of the moon and special escapement.

C. Three-body, "forme quatre baguettes", engine-turned, gold detachable cuvette. D. Silver, engine-turned with radial Roman numerals on a sanded chapter ring, sunk subsidiary seconds and moon phase aperture with its age on the border. Blued steel Breguet hands with unusual squared aperture inside the minute hand base for setting. M. 45,9 mm (21'''), gilt brass half plate, fusee with chain, Breguet continuous stop work on the fusee, female winding square and maintaining power, 15 jewels, Louis Bethoud type pivoted detent escapement, and three-arm brass-steel compensation balance with three trapezoidal temperature weights, each with one platinum nut and one platinum screw for mean time adjustment, free-sprung blued steel helical balance spring, ruby endstone.Signed on the dial, cuvette and movement.Diam. 53 mm.