Important Modern & Vintage Timepieces

Geneva, Nov 11, 2012

LOT 500

PATEK PHILIPPE GOLD CASED ? GENEVA OBSERVATORY HONORABLE MENTION. Patek Philippe & Cie., Geneve, No. 191004, case No. 416602. Made circa 1918, Geneva Observatory tested and Honorable Mention obtained in 1930 with 698 points, adjusted for trial by Henri Wehrli. Extremely fine and rare, 18K yellow gold, keyless, adjusted ?EXTRA" lever chronometer pocket watch with Guillaume balance. Accompanied by the extract from the Geneva Observatory register. To be sold without reserve

CHF 6,000 - 8,000

USD 6,500 - 8,500 / EUR 5,000 - 6,500

Sold: CHF 20,000

C. Four-body, "bassine", polished, concealed hinge. Hinged gold cuvette. D. White enamel with Paris numerals, outer minute track, subsidiary seconds. Blued steel Breguet hands. M. 18???, rhodium plated, fausses côtes decoration, 23 jewels, adjusted ?Extra?, punched twice with the seal of Geneva quality mark, straight line calibrated equidistant lever escapement, anibal-brass Guillaume compensation balance with poising wings on the balance arm, gold temperature adjustment screws, adjusted to heat, cold, isochronism and 5 positions, blued steel Breguet balance spring with outer terminal curve, swan-neck micrometric regulator, wolf?s tooth winding, special mainspring ratchet wheel click preventing over winding and Maltese Cross stop work. Dial, case, cuvette and movement signed. Diam. 50 mm.


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Grading System
Grade: AAA

Excellent
Case: 3-19

Good

Dent(s)
Movement: 2*

Very good

Overhaul recommended, at buyer's expense
Dial: 2-01

Very good

HANDS Original

Notes

500 - A rare example of a gold-cased Observatory trial watch. The movement has the unusual winding click and Maltese cross stopwork to prevent over winding found on very few Patek Philippe watches and seemingly only those for Observatory testing. When destined for Observatory Timing Contests, the movements of Patek Philippe watches, like those of other makers, were double engraved with the movement serial numbers. The inscription "Extra" on the bridge of the movement refers to the high fi nishing of all the parts of the movement