Manufacturer: Audemars Piguet
Year: 1999
Reference No: 25820PT.OO.0944PT/01
Movement No: 424’940
Case No: No. 40; E 23647
Model Name: Royal Oak Perpetual Calendar “Tuscan Dial”
Material: Platinum
Calibre: Automatic, cal. 2120/2801-2, 38 jewels
Bracelet/Strap: Platinum Audemars Piguet bracelet, max length 225mm
Clasp/Buckle: Platinum and 18K white gold Audemars Piguet deployant clasp
Dimensions: 39mm Diameter
Signed: Case, dial, movement, and bracelet signed.
Accessories: Accompanied by original and undated Audemars Piguet Certificate of Origin and Guarantee, instruction manual, setting pin, fitted presentation box, and outer box. Additionally accompanied by Audemars Piguet Digital Extract from the Archives confirming this watch was registered in their archives on December 16th, 1999.
Catalogue Essay
Introducing a leap year indicator to Audemars Piguet’s Royal Oak Perpetual Calendar, the reference 25820 was launched in 1996 and remained in production until 2013. The complete count numbers 628 pieces in steel, 107 pieces in yellow gold, 74 pieces in platinum, 11 in pink gold, 378 in steel/platinum, 15 in tantalum/yellow gold, 9 in tantalum/platinum, and 13 in tantalum/pink gold were produced, for a grand total of 1,235 examples. Of those 74 pieces in platinum, research shows that only 12 were ever fitted with the elusive ‘Tuscan’ dial, and to our knowledge only one example of this configuration has ever been offered publicly.

The flawless, arresting, and dynamic “Tuscan” dial draws its name from the unique texture of the dial, reminiscent of the characteristic finishing of the Italian region’s buildings. When examined closely, one will find that no two dials are exactly alike. The fine and delicate ridges on the dial catch the light perfectly, and can change in tone depending on the angle. The silver printing on the dial, rather than white, is a flawless design choice on the part of Audemars Piguet, perfectly complementing the luxurious platinum case.

Recently serviced by the manufacture, the present platinum Royal Oak perpetual calendar in platinum retains its service stickers to the caseback and bracelet. In superb condition, it is offered with its full complement of original accessories; a stunning and pristine example for the collector in pursuit of the rarest of the rare.
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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