Patek Philippe & Cie., Genève, No. 109856, case No. 223714, made for Shreve, Crump & Law Co., Boston, circa 1900. Very fine 18 ct. gold keyless pocket chronometer awarded a bulletin at the Geneva Astronomical Observatory timing contest in 1899. | Important Collectors Wristwatches Pocket Watches & Clocks | Geneva, Hotel Des Bergues, 21st October 1995

Important Collectors Wristwatches Po...

Geneva, Hotel Des Bergues, Oct 21, 1995

LOT 816

Patek Philippe & Cie., Genève, No. 109856, case No. 223714, made for Shreve, Crump & Law Co., Boston, circa 1900. Very fine 18 ct. gold keyless pocket chronometer awarded a bulletin at the Geneva Astronomical Observatory timing contest in 1899.

CHF 4,500 - 5,500

C. Four body, massive, "demi-bassine", polished. Hinged gold cuvette. D. White enamel with Breguet numerals, outer red Arabic minute ring and sunk subsidiary seconds. Gold "Louis XV" hands. M.18"' " Extra quality", nickel plated, "fausses côtes" decoration, 21 jewels, counterpoised straight lire lever escapement, cut bimetallic balance, "Extra" adjustment by C. Batifolier, blued steel Breguet balance spring with Patek Philippe patented micrometric index. Signed on the dial, case and movement. In very good condition, with photocopies of the records of the timing contest. Diam. 47 mm.

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Timing FContest : - Mean average daily rate +/- 0,39 - Restart period + 0,58 - Error of compensation per degree C +/- 0, - Mean error in 6 positions +/- 1,92 With 160,4 marks, this chronometer was not classed. The first in the trial gained 236,4 and the fast 184, on a possible maximum of 300.