Patek Philippe & Cie., Genève, No. 153538, case No. 268129, sold on the 7 November 1913. Very fine 18 ct. gold keyless pocket chronometer, awarded the 2nd prize at the the Geneva Astronomical Observatory timing contest 1911-1912. In original mahogany fitted box, with certificate. | Important Watches, Wristwatches and Clocks | Geneva, Hotel Des Bergues, 15th October 1994

Important Watches, Wristwatches and C...

Geneva, Hotel Des Bergues, Oct 15, 1994

LOT 512

Patek Philippe & Cie., Genève, No. 153538, case No. 268129, sold on the 7 November 1913. Very fine 18 ct. gold keyless pocket chronometer, awarded the 2nd prize at the the Geneva Astronomical Observatory timing contest 1911-1912. In original mahogany fitted box, with certificate.

CHF 10,000 - 12,000

C. Four body, massive, «demi-bassine», polished, the back engraved with the monogram "A.R.". Gold cuvette engraved with the name of the owner. 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 lino 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, with photocopies from the records of the timing contest. Diam. 49 mm.

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Timing Contest: - Mean average daily rate +/- 0,13 - Restart period + 0,44 - Error of compensation per degree C +/- 0,039 - Mean error in 6 positions +/- 0,26 With 787 marks, this chronometer was the Il th out of 102 classified with more than 600 marks. The first one with 866 and the last one with 600, the maximum being 1000 marks.