PATEK PHILIPPE. A RARE AND IMPORTANT 18K WHITE GOLD AUTOMATIC ASTRONOMICAL WRISTWATCH WITH SKY CHART, PHASES AND ORBIT OF THE MOON, AND TIME OF MERIDIAN PASSAGE OF SIRIUS AND OF THE MOON
PATEK PHILIPPE. A RARE AND IMPORTANT 18K WHITE GOLD AUTOMATIC ASTRONOMICAL WRISTWATCH WITH SKY CHART, PHASES AND ORBIT OF THE MOON, AND TIME OF MERIDIAN PASSAGE OF SIRIUS AND OF THE MOON

SIGNED PATEK PHILIPPE, GENEVE, MODEL CELESTIAL, MOVEMENT NO. 3328238, CASE NO. 4281351, REF. 5102G, CIRCA 2004

Details
PATEK PHILIPPE. A RARE AND IMPORTANT 18K WHITE GOLD AUTOMATIC ASTRONOMICAL WRISTWATCH WITH SKY CHART, PHASES AND ORBIT OF THE MOON, AND TIME OF MERIDIAN PASSAGE OF SIRIUS AND OF THE MOON
SIGNED PATEK PHILIPPE, GENEVE, MODEL CELESTIAL, MOVEMENT NO. 3328238, CASE NO. 4281351, REF. 5102G, CIRCA 2004

Cal. 240 LU CL, nickel-finished lever movement, 45 jewels, Gyromax balance, unidirectional 22k gold mini-rotor, the dial showing a portion of nocturnal northern hemispherical sky, with silvered Roman numerals applied to the inside of the sapphire crystal, a silvered ellipse marked with cardinal points framing the portion of sky visible from Geneva, skeletonised white-lacquered gold feuille hands, the large circular water-resistant-type case with glazed display screw back, band decorated with halves of the Calatrava cross in relief, crown at two to wind and set the watch, crown at 4 to set the moonphase in one direction and the sky in the other, together with an 18k white gold Patek Philippe buckle, case, crystal and movement signed
43 mm. diam.; 10 mm. thick

Lot Essay

US$120,000-160,000

This watch is accompanied by the original Patek Philippe cardboard slip case, two Patek Philippe presentation boxes, one with winding carousel, and outer packaging, Certificate of Origin and a leather folder with instructions for the use of this watch and diagrams of the movement.

The Reference 5012

Following the sensation of the Star Caliber 2000, one of the most complicated pocket watches ever created and the Sky Moon Tourbillon, a Grand Complication wristwatch that embodies the horological innovation of its sister timepiece, Patek Philippe presents, in 2002, the Sky Moon Celestial wristwatch.

Encompassing all the astronomical indications of its predecessors with the same configuration of the nocturnal sky with the movement of the stars, the position of the moon, and its progressing phases within a lunar cycle, the Celestial wristwatch, nevertheless, differs in that it allows the wearer to admire the progression of the stars while observing the mean solar time on his wrist.

In order to achieve this, Patek Philippe devised a highly sophisticated and complex system whereby stacked discs, each turning at different speeds and creating a spellbinding sensation of depth, are employed.

These discs are protected by sapphire crystal glass with an ellipse on the inside that frames the sky visible above Geneva at any time of the day. A lunar day, a lunar cycle, and a sidereal day are of differing durations, and each in turn differs from mean solar time (24 hours, as displayed by the hands of a watch). The discs representing all these durations have to be driven by the base caliber - a feat of horological micro-mechanics. For this invention, which was developed for the Star Caliber 2000, Patek Philippe was awarded Swiss Patent CH 688 171 B5.

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