Collector's Pocket Watches, Wristwatc...

Noga Hilton, Geneva, Apr 12, 2003

LOT 314

Patek, Philippe & Cie., Genève,No. 178435, case No. 293831, circa 1915.Very fine and rare chromium-plated keyless "EXTRA" adjusted deck chronometer with Guillaume balance and stop feature destined for Observatory Timing Contest in original wooden fitted box.

CHF 5,000 - 7,000

EUR 3,500 - 4,800 / USD 3,700 - 5,200

Sold: CHF 18,400

C.Three-piece, drum type, polished, stop pushpiece at 4 o'clock. D. Heavy, solid, matte silver, bold Arabic numerals, outer minute track, up-and-down indicator at 12 o'clock, subsidiary sunk seconds. Blued steel "spade" hands. M. 49 mm. (22'''), Cal. 21o, nickel, "fausses côtes" decoration, 21 jewels, straight line calibrated lever escapement, anibal-brass Guillaume balance with special alloy Breguet balance spring having inner and outer terminal curves, "swan-neck" micrometric regulator.Signed on dial, case and movement.Diam. 91 mm.


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Grading System
Grade: AAA

Excellent
Case: 3
Movement: 3*
Dial: 3 - 01

Notes

When destined for Observatory Timing Contests, Patek Philippe watches - as did those of other makers-- had their movements double-engraved with serial numbers.