Important Collectors’ Wristwatches, P...

New York - The Fuller Building, Mar 28, 2007

LOT 185

"New York, A Question of Time" Audemars Piguet, Genève, "Jules Audemars - Sunrise - Sunset - Equation du Temps", No. 548524, case No. E 66105, Ref. 25997 BA. Made in a limited quantity each year since 2000. Very fine and important, astronomic, self-winding, water-resistant, 18K yellow gold and diamond gentleman's wristwatch with perpetual calendar, leap year, moon phases, sunrise and sunset set for the city of New York, equation of time, 40-hour autonomy and an 18K yellow gold Audemars Piguet deployant clasp. Accompanied by a fitted box, certificate and a setting pin.

C. Three-body, solid, polished, entire case set with a total of 299 round diamonds, transparent case back with 5 screws, engraved bezel with graduation for the equation of time and New York latitude of 11h 55', straight lugs, sapphire crystals. D. Guilloché mother-of-pearl with applied yellow gold star indexes, each set with a round diamond, subsidiary plain mother-of-pearl dials for the days of the month, of the week at 6, 12-hour sunrise dial at 9 and 24-hour sunset dial at 3, aperture for the leap year at 1, the months and the aperture for the moon phases at 12. Black skeletonized "alpha" hands. M. Cal. 2120, rhodium-plated, "fausses côtes" decoration, 41 jewels, straight-line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, self-compensating free-sprung flat balance spring, hand-engraved and skeletonized rotor with 21K gold segment. Dial, case and movement signed. Diam. 39 mm. Thickness 12 mm.