Exceptional horologic works of art

Hotel Noga Hilton, Geneva, Oct 11, 2003

LOT 373

Patek Philippe & Cie, Genève, ?Calatrava Amagnetic?, No. 730911, case No. 310561, Ref. 2545. Production of this reference started in 1954. Very fine and rare, water-resistant, 18K yellow gold gentleman's wristwatch.

CHF 4,000 - 6,000

EUR 2,600 - 3,900

Sold: CHF 8,050

C. three-body, solid, polished, screwed-down case back, flat bezel, concave lugs. D. matte silver with applied yellow gold baton indexes, auxiliary seconds dial. Yellow gold Dauphine hands. M. Cal. 27-400 AM, stamped with the Geneva Quality Hallmark, rhodium-plated, ?fausses côtes? decoration, 18 jewels, bronze beryllium straight line lever escapement, Gyromax balance adjusted for heat, cold, isochronism and 5 positions, shock-absorber, self-compensating Breguet balance-spring.Dial, case and movement signed.Diam. 31 mm.


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Grading System
Grade: AAA

Excellent
Case: 3 - 6
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 3 - 01

Notes

The 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.