Audemars Piguet - The Royal Oak 50th Geneva Friday, May 6, 2022 | Phillips

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  • Manufacturer: Audemars Piguet
    Year: 1995
    Reference No: 25636ST
    Movement No: 391'032
    Case No: D42072.27/50
    Model Name: Royal Oak Perpetual Calendar
    Material: Stainless steel
    Calibre: Automatic, cal 2120/2800_SQ, 38 jewels
    Bracelet/Strap: Stainless steel Audemars Piguet bracelet, max length 180mm
    Clasp/Buckle: Stainless steel Audemars Piguet deployant clasp
    Dimensions: 39mm Diameter
    Signed: Case, dial, movement and bracelet signed
    Accessories: Accompanied by Audemars Piguet Extract from Register and a pouch. Furthermore accompanied by Audemars Piguet and Phillips in Association with Bacs & Russo co-signed Royal Oak 50th Anniversary Attestation.

  • Catalogue Essay

    Following the presentation of its first perpetual calendar Royal Oak model in 1984, Audemars Piguet followed up with an openworked version in 1986 including a sapphire caseback. Reference 25636 was in production until 1997 and made in 60 pieces in steel, 156 pieces in yellow gold, 6 pieces in pink gold, 41 pieces in platinum, 24 pieces in pink gold and platinum, and 25 pieces in steel and platinum, for a total of 312 examples.

    Exceptionally bold, the present Royal Oak Perpetual Calendar is offered in excellent condition with a visually arresting openwork dial and movement. The beholder is hypnotized by the breathtaking view of the movement from both front and back. Non-essential metal from the movement’s plates and bridges have been removed, while the remaining “openworked” parts have been delicately hand engraved and finished. One can see a symphony of foliage, chamfering, mirror polishing and sunray finishes.

    The present reference 25636 is part of the last generation of openworked perpetual calendar models offered without a leap-year indicator, which would later be introduced on all subsequent Royal Oak perpetual calendar models by the mid-1990s. Highly sought-after by connoisseurs, these first generation models are appreciated for their simple and pure elegance.

    One of just 60 pieces made in steel, the present watch will surely impress the most discerning collectors who are seeking for a splendid specimen of this coveted reference.

  • Artist Biography

    Audemars Piguet

    Swiss • 1881

    A specialist in the manufacture of complications since it was established in 1881, Audemars Piguet never ceases to impress with a rich history of creating bold, even audacious, timepieces underpinned by traditional watchmaking at its finest. This Le Brassus-based Swiss manufacturer is one of only two major manufacturers still owned by the founding family. Since its earliest days, AP is considered a leader in the field of minute repeaters and grande complication pocket and wristwatches. The brand is devoted to preserving the history of watchmaking in the Vallée de Joux, showcased at their superb museum in Le Brassus.

    Today, the brand is best known for its Royal Oak models, a revolutionary luxury sports watch launched in 1972. Other key models include early minute repeating wristwatches, vintage chronograph wristwatches, such as the oversized reference 5020, perpetual calendar watches and the Royal Oak Offshore, first introduced in 1993.

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Ref. 25636ST
A stunning stainless steel perpetual calendar wristwatch with openworked dial, number 27 of a 50 piece limited edition

39mm Diameter
Case, dial, movement and bracelet signed

CHF150,000 - 300,000 

Sold for CHF327,600

Contact Specialist

Alexandre Ghotbi

Head of Watches, Continental Europe and the Middle East

+41 22 317 81 81


Virginie Liatard-Roessli
Head of Sale, Specialist
+41 76 338 91 03

The Royal Oak 50th

Geneva Auction 6 May 2022