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 for a slightly thicker case thickness (8.25mm vs the 7.5mm of ref. 25554) meant to improve its water resistance capabilities. The firm further incorporated the ultra-thin 2120/2800 into the Royal Oak case, making it one of the world’s thinnest automatic perpetual calendar wristwatches at the time.

The present Audemars Piguet Royal Oak Perpetual Calendar ref. 25654BA is a beautifully preserved example, fitted with a highly desirable white MK I (no leap year indication, “old” signature) white dial. Finding a white dial in this model is quite rare - as they usually feature champagne dials. Aesthetically, the watch undergoes a true transformation. Departing from the “full gold” typical look, the white dial dresses down the watch while at the same time rendering it an unusual and rare configuration which will surprise and delight connoisseurs.

As expected from a MK I dial, it does not include a leap year indication (this feature was only added later, when the movement was updated to the calibre 2120/2802 in 1993) and it features the “old style” AP signature.

Featuring a very sharp case, original guarantee booklet and a luxurious aesthetic, this watch will grant endless delight to its lucky new owner.