• Lot 2325

    PATEK PHILIPPE, ADVANCED RESEARCH, ANNUAL CALENDAR, REF. 5350R, SPIROMAX

    PINK GOLD AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH MOON PHASE, POWER RESERVE INDICATION, SILINVAR SPIROMAX BALANCE SPRING AND SILICON ESCAPE WHEEL, LIMITED EDITION OF 300, DOUBLE SEALED IN ORIGINAL FACTORY BOX

    MOVEMENT 3686149, CASE 4375096, MANUFACTURED IN 2006

    Price Realised  

    PATEK PHILIPPE, ADVANCED RESEARCH, ANNUAL CALENDAR, REF. 5350R, SPIROMAX

    PINK GOLD AUTOMATIC ANNUAL CALENDAR WRISTWATCH WITH MOON PHASE, POWER RESERVE INDICATION, SILINVAR SPIROMAX BALANCE SPRING AND SILICON ESCAPE WHEEL, LIMITED EDITION OF 300, DOUBLE SEALED IN ORIGINAL FACTORY BOX
    MOVEMENT 3686149, CASE 4375096, MANUFACTURED IN 2006

    Calibre 324 S IRM QA LU, Geneva Seal hallmarked, 36 jewels, Gyromax balance, Silinvar Spiromax balance spring, silicon escape wheel, satined silvery grey dial, sweep centre seconds, date, day and month, moon phases, power reserve indicator, two-part case in 18k pink gold, screw down transparent case back with integrated loupe and engraved inscription "Patek Philippe Advanced Research", 18k pink gold PP deployant clasp, case, dial and movement signed
    Diameter: 39 mm.


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    EUR34,000-43,000

    With Patek Philippe special presentation box, Certificate of Origin, product literature and corrector.

    Consigned by the original owner, the present watch has never been offered in the public and is the first known double sealed example of the reference 5350 to appear at auction to date.

    Isochronism is the key to every measurement of time based on any form of vibration. The greater the regularity of the vibration, the better the movement can be adjusted to achieve high rate accuracy.

    In the constant quest for perfect isochronism in portable mechanical watches, Patek Philippe presented in 2006 the second limited edition of the "Advanced Research" series - Reference 5350 with the Spiromax balance spring and silicon escape wheel.

    Spiromax is a totally new type of balance spring made of Silinvar, a revolutionary material based on monocrystalline silicon obtained by a vacuum oxidation process that allows it to compensate for temperature variations. This patented silicon-based material is the result of research financed in partnership with the Swatch Group and Rolex. Its perfectly concentric nature, i.e. the symmetrical expansions and contractions of the balance spring in relation to its centre, is achieved by the patented "Patek Philippe terminal curve" lying within the plane of oscillation and allows the Spiromax spring to be crafted three times thinner than a Philips or Breguet overcoil.

    The new geometry includes an integral balance staff and stud attachment, offering perfect isochronous vibrations regardless of temperature variations, position of the movement and magnetic radiation.

    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.


    Pre-Lot Text

    THE PROPERTY OF A PRIVATE COLLECTOR