The Art of American Horology & Colle...

New York, Nov 28, 2001

LOT 422

Patek Philippe & Cie, Genève, "Calatrava", No. 727302, case No. 309769, Ref. 2597 HS (Heures Sautantes). Production of this reference started in 1958.Very fine and rare, two time zone, 18K yellow gold gentleman's wristwatch with two hands.

C. three-body, solid, polished and brushed, flat bezel, concave lugs, band bearing two buttons activating the hour hand forwards and backwards according to the world time, independently by steps of one hour at a time. D. matte silver with applied yellow gold and painted indexes, auxiliary seconds dial. "Dauphine" yellow gold hands. M. Cal. 12-400 HS, stamped with the Geneva Quality Hallmark, rhodium-plated, "fausses-côtes" decoration, 18 jewels, straight line lever escapement, cut bimetallic balnce adjusted to heat, cold isochronism and 5 positions, shock-absorber, Breguet balance-spring, micrometer regulator.Dial, case and movement signed.Diam. 35 mm.