PATEK PHILIPPE. A VERY RARE PLATINUM LIMITED EDITION AUTOMATIC PERPETUAL CALENDAR WRISTWATCH WITH MOON PHASES, LEAP YEAR INDICATION, SILINVAR ESCAPE WHEEL, SPIROMAX BALANCE SPRING AND ADDITIONAL CASE BACK
PATEK PHILIPPE. A VERY RARE PLATINUM LIMITED EDITION AUTOMATIC PERPETUAL CALENDAR WRISTWATCH WITH MOON PHASES, LEAP YEAR INDICATION, SILINVAR ESCAPE WHEEL, SPIROMAX BALANCE SPRING AND ADDITIONAL CASE BACK
PATEK PHILIPPE. A VERY RARE PLATINUM LIMITED EDITION AUTOMATIC PERPETUAL CALENDAR WRISTWATCH WITH MOON PHASES, LEAP YEAR INDICATION, SILINVAR ESCAPE WHEEL, SPIROMAX BALANCE SPRING AND ADDITIONAL CASE BACK
PATEK PHILIPPE. A VERY RARE PLATINUM LIMITED EDITION AUTOMATIC PERPETUAL CALENDAR WRISTWATCH WITH MOON PHASES, LEAP YEAR INDICATION, SILINVAR ESCAPE WHEEL, SPIROMAX BALANCE SPRING AND ADDITIONAL CASE BACK
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Many of the watches offered for sale in this catal… Read more PATEK PHILIPPE PLATINUM ADVANCED RESEARCH REF. 5550P-001THE PROPERTY OF AN IMPORTANT EUROPEAN COLLECTOR
PATEK PHILIPPE. A VERY RARE PLATINUM LIMITED EDITION AUTOMATIC PERPETUAL CALENDAR WRISTWATCH WITH MOON PHASES, LEAP YEAR INDICATION, SILINVAR ESCAPE WHEEL, SPIROMAX BALANCE SPRING AND ADDITIONAL CASE BACK

SIGNED PATEK PHILIPPE, GENEVE, ADVANCED RESEARCH, REF. 5550P-001, MOVEMENT NO. 5'627'821, CASE NO. 4'761'705, CIRCA 2013

Details
PATEK PHILIPPE. A VERY RARE PLATINUM LIMITED EDITION AUTOMATIC PERPETUAL CALENDAR WRISTWATCH WITH MOON PHASES, LEAP YEAR INDICATION, SILINVAR ESCAPE WHEEL, SPIROMAX BALANCE SPRING AND ADDITIONAL CASE BACK
SIGNED PATEK PHILIPPE, GENEVE, ADVANCED RESEARCH, REF. 5550P-001, MOVEMENT NO. 5'627'821, CASE NO. 4'761'705, CIRCA 2013
Movement: Automatic
Dial: Silvered
Case: 37 mm. diam.
With: Platinum Patek Philippe deployant clasp, additional solid case back stamped 4'761'705, setting pin and sales tag
Remark: 300 pieces made
Special notice
Many of the watches offered for sale in this catalogue are pictured with straps made of endangered or protected animal materials such as alligator or crocodile. These endangered species straps are shown for display purposes only and are not for sale. Christie’s will remove and retain the strap prior to shipment from the sale site. At some sale sites, Christie’s may, at its discretion, make the displayed endangered species strap available to the buyer of the lot free of charge if collected in person from the sale site within 1 year of the date of the sale. Please check with the department for details on a particular lot. This lot is subject to standard Swiss VAT rules and 7.7% VAT will be charged on the ‘hammer’ and the ‘buyer’s premium’

Brought to you by

Remi Guillemin
Remi Guillemin Head of Watches, Europe and Americas

Lot Essay

This endangered species strap is shown for display purposes only and is not for sale. The watch will be supplied with a calf leather strap.

A rare find at auction, the reference 5550 in platinum is part of the Patek Philippe Advanced Research series of watches. Introduced at Baselworld 2011 in a limited series of only 300 examples, the timepiece participates in the tradition of Patek Philippe to offer avant-garde components in order to enhance timekeeping accuracy and reliability of mechanical watches.

The present example is preserved in exceptional overall condition and, according to research, only the sixth example of this rare model ever to come up at international auction.

Reference 5550P Advanced Research
Differing from the first three references of the Advance Research series, the reference 5550 is set apart through its perpetual calendar complication (the first three PPARS watches have an annual calendar) and is fitted with the ultra-thin automatic caliber 240. With a highly attractive dial of silver color with pink gold indexes and luminous dots and hands, the timepiece is bestowed with a very elegant platinum case.

More than a perpetual calendar, the wristwatch uses the patented Oscillomax ensemble, which includes the Gyromax-Si balance in Silinvar and 24k gold, the Spiromax balance in Silinvar as well as a refined Pulsomax escapement. A notable result of the accrued efficiency brought by the new Oscillomax ensemble, the power reserve of the watch was increased by nearly 50%, from 48 hours to 70 hours and the movement accuracy was greatly increased. Launched in 2005, reference 5250 was the first timepiece developed under
the “Patek Philippe Advanced Research Program” and fitted with the innovative escape wheel in Silinvar. In 2006, reference 5350 followed and introduced the Spiromax balance spring made of Silinvar. Reference 5450 was later produced in 2008 and featured a Spiromax balance spring as well as a Pulsomax escapement in Silinvar. The timepieces were launched in editions of 100 to 300
examples and were instantly sold out.

The most advanced model of the series, the reference 5550 in platinum, features all the innovations found in previous references of the program and in addition is the first to feature the Oscillomax oscillator.

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