Patek Philippe & Cie., Genève, No. 153358, case No. 268129, sold on the 7 November 1913. Very fine fine 18 ct. gold keyless pocket chronometer, in original mahogany fitted box, with certificate and photocopies from the records of the timing contest organised at the Observatory of Geneva in | Important Watches, Wristwatches and Clocks | Geneva, Hotel Des Bergues, 10th April 1994

Important Watches, Wristwatches and C...

Geneva, Hotel Des Bergues, Apr 10, 1994

LOT 380

Patek Philippe & Cie., Genève, No. 153358, case No. 268129, sold on the 7 November 1913. Very fine fine 18 ct. gold keyless pocket chronometer, in original mahogany fitted box, with certificate and photocopies from the records of the timing contest organised at the Observatory of Geneva in

CHF 10,000 - 12,000

C. Four body, massive, "demi-bassine", polished, the back engraved with the monogram "A.R.". Gold cuvette. D. White enamel with Breguet numerals, outer red Arabic minute ring and sunk subsidiary seconds. Gold "spade" hands. M. 18-, "Extra quality", rhodium plated, "fausses côtes" decoration, 21 jewels, counterpoised straight line lever escapement, brass-invar Guillaume balance, "Extra" adjustment by C. Batifolier, Breguet balance spring with swan neck micrometric index. Signed on the dial, case and movement. In very good condition. Diam. 49 mm.

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Timing Contest: - Mean average daily rate +1- 0,13 - Restart period + 0,44 Error of compensation per degree C +/- 0,039 - Mean error in 6 positions +/- 0,26 This chronometer with 787 marks was the 90th out of 102 classified with more than 600 marks. The first one with 866 and the last one with 600.