Important Collectors’ Wristwatches, P...

Geneva, Mandarin Oriental Hotel Du Rhône, Nov 12, 2006

LOT 61

?Extra Large One-Minute Tourbillon-First Prize Geneva Observatory 1929? Patek Philippe & Cie, Geneve, No. 198323, case No. 415868. movement made in 1924, cased in 1930 after the chronometer contest, and sold on April 30, 1959. Extremely fine and exceptionally rare, extra large, 18K yellow gold keyless pocket lever chromometer with "Extra" quality movement, one-minute tourbillon regulator by J. Golay-Audemars, adjustment by Golay-Audemars, Guillaume balance, first prize winner at the Observatoire de Geneve contest, 1929, category A. Re-tested in 1959, regulated on this occasion by Andre Zibach. Accompanied by the Extract from the Archives and the Bulletin de Marche of 1959.

CHF 300,000 - 400,000

EUR 190,000 - 250,000 / USD 240,000 - 320,000

Sold: CHF 340,900

C. Four-body, ?bassine?, polished, concealed hinge. Hinged gold-rimmed glazed cuvette. D. Matte silver with applied yellow gold faceted baton indexes, outer minute divisions, subsidiary seconds. Yellow gold ?Dauphine? hands. M. 50 mm., 22???, "Extra", rhodium-plated, ?fausses côtes? decoration, 18 jewels, one-minute tourbillon regulator by Golay-Audemars, three equidistant arm polished steel cage and bridge, calibrated and counterpoised lateral lever escapement, Guillaume cut anibal-brass compensation balance with winged arms, adjusted to heat, cold, isochronism and five positions, 18 gold peripheral temperature adjustment screws, blued steel Breguet balance spring, index regulator. Dial, case and movement signed. Diam. 60 mm.


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Grading System
Grade:
Case: 2

Very good
Movement: 2

Very good
Dial: 2-01

Very good

HANDS Original

Notes

The present watch was submitted for trial at the Observatoire de Geneve in 1929, category A, achieving the following results: 849 points out of a possible 1000 - first prize. While this chronometer obtained the first prize with 849 points, the last one classifed obtained 601 points. It ranked first out of 98 watches examined. It was tested with a compensation error by Centigrade degrees of 0.018, and ?reprise de marche? of +0.20. It was submitted again for testing in 1959 and was regulated by Andre Zibach. The inscription "Extra" on the bridge of the movement refers to the high finishing of all the parts of the movement. The present lot is accompanied by a copy of the Geneva Observatory chonometer contest of 1929. Literature: Das Tourbillon, Reinhard Meis, Verlag Laterna Magica, 1986, p. 353.