Yellow Gold "Portuguese Secular Perpetual Calendar" International Watch Co., Schaffhausen, "Portuguese Perpetual Calendar", No. 2915680, Ref. 5021. Very fine and rare, large, self-winding, water-resistant, 18K yellow gold gentleman's wristwatch with secular perpetual calendar, moon phases, 7-day power-reserve and an 18K yellow gold IWC deployant clasp. | The Mondani Collection of Rolex Wristwatches / Important Collectors Wristwatches, Pocket Watches & Clocks | Geneva, 14th May 2006
Yellow Gold "Portuguese Secular Perpetual Calendar" International Watch Co., Schaffhausen, "Portuguese Perpetual Calendar", No. 2915680, Ref. 5021. Very fine and rare, large, self-winding, water-resistant, 18K yellow gold gentleman's wristwatch with secular perpetual calendar, moon phases, 7-day power-reserve and an 18K yellow gold IWC deployant clasp., CHF 27,000 - 32,000 EUR 17,000 - 20,000 / USD 20,000 - 25,000 C. Three-body, solid, polished and brushed, concave lugs, transparent case back with 6 screws, sapphire crystals. D. Black with applied yellow gold Arabic numerals, outer dot minute markers, subsidiary dials for the seconds, the day, date, months and the 7-day up-and down indication, apertures for the moon phases and the years. Yellow gold "feuille" hands. M. Cal. C 50611, rhodium-plated, "fausses-côtes" decoration, 64 jewels, straight line lever escapement, monometallic balance adjusted to 5 positions, shock-absorber, self-compensating Breguet balance spring, micrometer regulator, hack mechanism, skeletonized bi-directional rotor with gold medallion inlay engraved "IWC ?Probus Scafusia?. Dial, case and movement signed. Diam. 44 mm. Thickness 15 mm.
