The Private Collection of Theodor Beyer

Hotel Baur Au Lac, Zurich, Nov 16, 2003

LOT 133

Patek Philippe & Cie, Genève, "Antimagnetic", No. 730605, case No. 427879, Ref. 3420. Production of this reference started in 1959. Fine 18K yellow gold gentleman's wristwatch. Accompanied by the Extract from the Archives.

CHF 6,000 - 8,000

EUR 3,900 - 5,200 / USD 4,400 - 6,000

Sold: CHF 16,100

C. two-body, polished and brushed, concave lugs.D. matte silver with applied yellow gold indexes, subsidiary seconds dial. Yellow gold "Bâton" hands. M. Cal. 27 AM-400, stamped with the Geneva Quality Hallmark, rhodium-plated, "fausses-côtes" decoration, 18 jewels, straight line gold lever escapement, Gyromax balance adjusted for heat, cold, isochronism and 5 positions, shock-absorber, self-compensating free-sprung Breguet balance-spring.Dial, case and movement signed.Diam. 34 mm.

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Grading System
Grade: AA

Very good

Case: 3


Movement: 3


Dial: 3-01


HANDS Original


Caliber 27-400 AM is equipped with a bronze-beryllium lever escapement, and is sometimes fully protected by a soft iron cap. It can withstand magnetic fields up to 450 oersteds unit of measurement of the intensity of a magnetic field. A similar watch is in "Collecting Patek Philippe Watches" by M. and O. Patrizzi, Guido Mondani Editore, Genova 2001, pp. 54-123.