PATEK PHILIPPE. A RARE 18K WHITE GOLD LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH SWEEP CENTRE SECONDS, MOON PHASES, POWER RESERVE, CERTIFICATE OF ORIGIN AND BOX
PATEK PHILIPPE. A RARE 18K WHITE GOLD LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH SWEEP CENTRE SECONDS, MOON PHASES, POWER RESERVE, CERTIFICATE OF ORIGIN AND BOX
PATEK PHILIPPE. A RARE 18K WHITE GOLD LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH SWEEP CENTRE SECONDS, MOON PHASES, POWER RESERVE, CERTIFICATE OF ORIGIN AND BOX
PATEK PHILIPPE. A RARE 18K WHITE GOLD LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH SWEEP CENTRE SECONDS, MOON PHASES, POWER RESERVE, CERTIFICATE OF ORIGIN AND BOX
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This lot is subject to standard Swiss VAT rules an… Read more PATEK PHILIPPE WHITE GOLD ADVANCED RESEARCH REF. 5250G-001THE PROPERTY OF AN IMPORTANT EUROPEAN COLLECTOR
PATEK PHILIPPE. A RARE 18K WHITE GOLD LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH SWEEP CENTRE SECONDS, MOON PHASES, POWER RESERVE, CERTIFICATE OF ORIGIN AND BOX

SIGNED PATEK PHILIPPE, GENEVE, ADVANCED RESEARCH, REF. 5250G-001, MOVEMENT NO. 3'636'020, CASE NO. 4'339'164, CIRCA 2006

Details
PATEK PHILIPPE. A RARE 18K WHITE GOLD LIMITED EDITION AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH SWEEP CENTRE SECONDS, MOON PHASES, POWER RESERVE, CERTIFICATE OF ORIGIN AND BOX
SIGNED PATEK PHILIPPE, GENEVE, ADVANCED RESEARCH, REF. 5250G-001, MOVEMENT NO. 3'636'020, CASE NO. 4'339'164, CIRCA 2006
Movement: Automatic
Dial: Silvered
Case: 39 mm. diam.
With: 18k white gold Patek Philippe deployant clasp, Certificate of Origin dated 2006, product literature, slip case, presentation box and outer packaging
Remark: Limited edition of 100 pieces
Special notice
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

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 (the present lot), 5350 and 5450. 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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