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Audemars Piguet

Ref. 25654ST.OO.0944ST.01

Royal Oak Perpetual Calendar

A beautifully preserved and highly attractive stainless steel perpetual calendar wristwatch with moon phase, bracelet, Extract from the Archives, winding box, and setting pin

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Caliber 2120/2800 debuted in 1977, making it at the time the world’s slimmest perpetual calendar movement with a thickness of only 3.95mm. In the heart of the quartz crisis gripping the Swiss watch industry, that they chose to channel their efforts into creating an even more complicated mechanical movement says a lot about the priorities of the brand. In 1982, they fitted this caliber into the Royal Oak case, and an icon was born.

Reference 25654 replaced the first Royal Oak Perpetual calendar reference 25554 in 1987 and was produced until 1998 in 315 pieces in steel, 430 pieces in yellow gold, 68 pieces in steel and yellow gold and 38 in platinum. It differs from its sibling with a slightly thicker case (8.25mm vs the 7.5mm of ref. 25554) meant to improve its water resistance capabilities.

Accompanied by its original winding box and setting pin, the watch is preserved in excellent overall condition, with beautiful finishing to the case and a stunning, multi-layered monochromatic silver dial.

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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