Important Collector's Wristwatches, P...

New York, Dec 01, 2004

LOT 44

International Watch Co., Schaffhausen, "Portuguese Perpetual Calendar", Automatic, No. 236/250, case No. 2919116, Ref. 5021. Produced in a limited edition of 250 examples in 2003. Very fine and very rare, self-winding, water-resistant, platinum gentleman?s wristwatch with secular perpetual calendar, double moon phases (for northern and southern hemispheres), 7-day power-reserve and a platinum IWC deployant clasp. Accompanied by a wooden fitted box, certificate and an additional calendar slide for future millennia.

C. Three-body, solid, polished and brushed, concave lugs, transparent case back with 6 screws, sapphire crystals. D. Matte silver with applied white gold Arabic numerals, subsidiary"guilloché" dials for the seconds, the days of the week, the up-and-down indication, the date and the months, apertures for the double moon phases at 12 and the leap year between 7 and 8. White gold "feuille" hands.M. Cal. 50611, rhodium plated, "fausses côtes" decoration, 66 jewels, straight line lever escapement, monometallic balance adjusted to five positions, shock absorber, self-compensating Breguet balance-spring, micrometer regulator, skeletonized bi-directional rotor with gold medallion inlay engraved "IWC-Probus Scafusia-Seven (7) Days Power-Reserve".Dial, case and movement signed.Diam. 44 mm.