27,600 CHF
Patek Philippe & Cie. , Genève, No. 161220, case No. 280134, made for The Sweeney Jewelry Co., Houston, Texas, circa 1912. Very fine 18K gold keyless pocket chrono-meter with 36-hour power reserve indi-cator, awarded the third prize at the Geneva Astronomical Observatory timing contest 1912-1913. White enamel with Breguet numerals, outer minute track, sunk subsidiary seconds, sector for up-and-down indicator below 12 o’clock. Blued steel "spade" hands. 40.5 mm. (18’’’), "Extra" quality, rhodium-plated, "fausses-côtes" decoration, 21 jewels, counterpoised straight line lever escapement, anibal-brass Guillaume compensation balance, eight adjustments by C. Batifolier, Breguet balance spring with "swan-neck" micrometric index. Signed on the dial, case and movement. Diam. 50 mm. Notes Timing Contest : - Mean average daily rate +/- 0"21 - Restart period - 0"36 - Error of compensation per degree C +/- 0"026 - Mean error in 6 positions +/- 0"51
Auctioneer:
Antiquorum
Date:
2002-10-19
