Patek Philippe & Cie., Genève, No. 161216, case No. 278545, made for Brock & Company, Los Angeles, Cal., in 1911, sold on 18 November 1913. Very fine 18 ct. gold keyless pocket chronometer with power reserve indicator, awarded the third prize at the Geneva Astronomical Observatory timing contest in 1911. | 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 813

Patek Philippe & Cie., Genève, No. 161216, case No. 278545, made for Brock & Company, Los Angeles, Cal., in 1911, sold on 18 November 1913. Very fine 18 ct. gold keyless pocket chronometer with power reserve indicator, awarded the third prize at the Geneva Astronomical Observatory timing contest in 1911.

CHF 21,000 - 25,000

C. Four body, massive, "bassine", polished. Gold cuvette engraved with the awarded prize. D. White enamel with Breguet numerals, sunk subsidiary seconds and halfmoon sector for the 30 hours, up-and down scale. Blued steel "spade" hands. M. 18'"" Extra quality", rhodium plated, "fausses côtes" decoration, 21 jewels, counterpoised straight fine lever escapement, brass-invar Guillaume balance, eight 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. 50 mm.

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Timing Contest : - Mean average daily rate +/- 0"12 - Restart period - 0"96 - Error of compensation per degree C +/- 0"030 - Mean error in 6 positions +/- 0"53 With 750 marks, this chronometer was the 29th out of 102 classified with more than 600 marks. The first one with 832 and the last one with 600, the maximum being 1000 marks.