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PATEK PHILIPPE. A FINE AND RARE PLATINUM LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH SWEEP CENTRE SECONDS, POWER RESERVE, MOON PHASES, SILINVAR SPIROMAX BALANCE SPRING AND PULSOMAX ESCAPEMENT, ORIGINAL CERTIFICATE AND BOX

Prospective purchasers are advised that several countries prohibit the importation of property containing materials from endangered species, including but not limited to coral, ivory, tortoiseshell and crocodile. Accordingly, prospective purchasers should familiarize themselves with relevant customs regulations prior to bidding if they intend to import this lot into another country.
PATEK PHILIPPE. A FINE AND RARE PLATINUM LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH SWEEP CENTRE SECONDS, POWER RESERVE, MOON PHASES, SILINVAR SPIROMAX BALANCE SPRING AND PULSOMAX ESCAPEMENT, ORIGINAL CERTIFICATE AND BOX

SIGNED PATEK PHILIPPE, ADVANCED RESEARCH, ANNUAL CALENDAR MODEL, REF. 5450, MOVEMENT NO. 3'900'223, CASE NO. 4'700'548, MANUFACTURED IN 2009

Details
PATEK PHILIPPE. A FINE AND RARE PLATINUM LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH SWEEP CENTRE SECONDS, POWER RESERVE, MOON PHASES, SILINVAR SPIROMAX BALANCE SPRING AND PULSOMAX ESCAPEMENT, ORIGINAL CERTIFICATE AND BOX SIGNED PATEK PHILIPPE, ADVANCED RESEARCH, ANNUAL CALENDAR MODEL, REF. 5450, MOVEMENT NO. 3'900'223, CASE NO. 4'700'548, MANUFACTURED IN 2009 Cal. 324/268 automatic lever movement stamped with the Geneva seal, 34 jewels, Gyromax balance, Silinvar Spiromax balance spring, silicon Pulsomax escape wheel, salmon dial, applied baton and Arabic numerals, luminous hands, sweep centre seconds, two subsidiary dials for day and month, apertures for date and moon phases, power reserve indicator, circular case, screw down glazed display back with integrated loupe and engraved inscription Patek Philippe Advanced Research, platinum Patek Philippe deployant buckle, case, dial and movement signed 39 mm. diam.
Special Notice

Prospective purchasers are advised that several countries prohibit the importation of property containing materials from endangered species, including but not limited to coral, ivory, tortoiseshell and crocodile. Accordingly, prospective purchasers should familiarize themselves with relevant customs regulations prior to bidding if they intend to import this lot into another country.

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Lot Essay

US$60,000-80,000

With Patek Philippe Certificate of Origin dated April 2009, Wempe Warranty dated April 2009, instruction manual, product literature, leather wallet, fitted slip case, presentation box and outer packaging.

The Advanced Research department at Patek Philippe is responsible for horological improvements and technical innovations. One of their important developments in recent years is the creation of silicium, forged using the ultra-modern DRIE (Deep Reactive Ion Etching) process. Previously, hair springs were crafted from carbon steel, a material that is susceptible to magnetism, oxidation or rust and temperature variations. Modern-day silicium contributes greatly to the precision that Patek Philippe prides itself on, as it has non-magnetic, non-oxidisation properties, reduced mass, is not affected by temperature and has reduced sensitivity as it is three times lighter than conventional springs.

Following in the footsteps of this range's previous references, silicium is used in the references 5250 (please see lot 4811), 5350 (please see lot 4957) and 5450 (the present lot). With the most current reference, the three most important components of the escapement - the hairspring, the balance wheel and the anchor or pallet fork - are now in silicium or Silinvar, as Patek Philippe has named it. With the use of the revolutionary Silinvar Spiromax spring, Patek Philippe has ventured one step closer to perfection - the spring is isochronous regardless of temperature, movement orientation or magnetic presence.

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