Audemars Piguet

25820PT, ‘Tuscan’ Dial Royal Oak Quantième Perpétuel, Platinum

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A ref. 25820PT Royal Oak Perpetual Calendar, 1 of 12 examples made with a ‘Tuscan’ dial. Tuscan dials are a laboriously hand-hammered finished with a vibrant galvanic blue, the earliest known use of a tremblage technique in a wristwatch dial. The are days of effort resulting in this cratered surface. Under loupe, it appears as an ocean of waves crashing. The 25820 was the first Royal Oak Perpetual Calendar to feature leap year indication, carrying on the legacy of the 5554 as the pinnacle of utilitarian luxury. Tuscan dial QPs have long stood as some of the most coveted Royal Oaks ever made. They are rumored to have been the inspiration for John Mayer’s recent collaboration with Audemars Piguet. This is the authentic artifact, made by hand, in platinum. It is a level of investment in beauty we may never see again from AP, a monument to Le Brassus at their absolute best.

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Worth Reading

Audemars Piguet invented complicated sporting watches as a category in the 1984 ref. 5554 by integrating a perpetual calendar within the Royal Oak case, creating the pinnacle of utilitarian luxury. This is the second generation of Royal Oak Quantième Perpétuel in platinum, ref. 25820PT, but perhaps more impressively with a 'Tuscan' dial. Tuscan dials are the peak of handcraft within Audemars Piguet, a rare, painstakingly hand-hammered galvanic blue with an unrivaled depth. According to AP's records, this is 1 of just 12 examples made of the 25820PT with a Tuscan dial. Fewer than half have surfaced since 1998. It is easily amongst the most desirable Royal Oaks ever produced.

Tuscan dials are formed by hand with a burin and hammer, the result of tens of thousands of tiny taps to create this fractal plane. Achieving consistent depth is the hard part, which does require immense skill. The technique broadly the same as Tremblage. However, AP's Tuscan dials are the earliest known use on a wristwatch dial, where earlier it was used as bridge decoration for pocket watch movements. The technique has since been adopted by more daring independents such as Akrivia and Winnerl, but really began here. After hammering, the dials were given a series of galvanic baths resulting in this all-consuming blue. Under loupe, it appears as an ocean of waves crashing into one another. No one knows precisely why we call them Tuscan dials, though rumors of old AP catalogues listing them as Tuscan or Italian collectors celebrating them first appear to be the prevailing theories. This is set against platinum cabochon indices with sword subdial hands and a conically mirrored straight handset.

The ref. 25820 was the first to feature a leap year indication inside the Royal Oak case. By the time this ref. arrived, water resistance had been thoroughly revised whilst keeping a 9.3mm overall case thinness. The case and bracelet are all rendered in platinum, creating an immense presence on wrist. It is beautifully finished with arresting contrast between the beveled, brushed, and polished surfaces. 74 platinum examples were made in including all dials.

Calibre 2120/2802 is an ébauche derived from the venerable JLC 920. However, unlike modern counterparts, it is entirely hand finished. It sports world-class côtes de genève, anglage, and black polished edges. Further, the more special dial variants were given a skeletonized rotor with hand-engraved decoration. From debut, this remained the thinnest self-winding perpetual calendar calibre for decades of its production, an extremely technically accomplished and beautiful calibre.

Tuscan dial QPs have long stood as some of the most coveted Royal Oaks ever made. They are rumored to have served as inspiration for John Mayer's recent Royal Oak with AP. However, where that dial is made by stamping, this Tuscan dial represents days of effort in pure traditional watchmaking techniques. This is the authentic artifact, made by hand, in platinum. It is a level of investment in beauty we may never see again from AP, a monument to Le Brassus at their absolute best.

Condition

This 25820PT presents in remarkable condition, both in dial and case. The watch was found at an unclaimed and deceased safety deposit box auction after its original owner had passed. It stayed dormant in that box over 20 years. The watch was then sent to service at Audemars Piguet when the Certificate or Authenticity was ordered, which confirmed the Tuscan dial was indeed original to the watch, a 1998 production, and that all was correct. This is how this case presents so beautifully, there is very light surface wear but nothing more and no significant marks on bracelet or case. Most Tuscan dials have chipping and color change at the edges of the subdials, this example has none. The calibre was serviced last year and is running well in specification. The bracelet will currently accommodate up to a 6.7-inch wrist, however two links are included with the sale which are currently on order and being produced at Audemars Piguet, which will extend the bracelet to its full links at 7.4-inch accommodation. Additional links may be ordered upon request. The watch comes with its Certificate, but no box, and additional links once complete.

Specifications

This example is modelled on an average-sized 7-inch wrist.

  • Brand: Audemars Piguet
  • Model: Royal Oak Quantième Perpétuel
  • Reference: 25820PT.OO.0944PT/01
  • Size: 39
  • Year: 1998
  • Case Material:
  • Movement: Automatic Calibre 2120/2802
  • Scope: Watch, AP Certificate of Authenticity