The Royal Oak Quantième Perpétuel reference 25654BA occupies a very specific place in Audemars Piguet’s history. Produced in the late 1980s and early 1990s, it represents the moment when the Royal Oak evolved from a pure design statement into a true high-complication wristwatch, without sacrificing the integrity of Gérald Genta’s original concept.

Executed in yellow gold, the 25654BA has a presence that is familiar in size (39mm, like the OG Jumbo) but packs a bit more punch. The sharp geometry of the Royal Oak case and bracelet provides a disciplined framework for a perpetual calendar display that remains remarkably legible; especially with a white dial. Day, date, month, leap year and moonphase are arranged with balance and restraint, integrated -into the smooth dial surface- in a way that feels architectural rather than decorative. Nothing is superfluous; everything serves clarity.

Inside beats Audemars Piguet’s ultra-thin perpetual calendar movement, a technical achievement that underscores the maison’s mastery of complicated watchmaking at a time when such expertise was far from commonplace. The slim profile of the watch is not an aesthetic choice alone, but a reflection of the movement’s refinement and ambition.

The watch comes with its original box and papers, but more importantly; remains very well preserved. Gold Royal Oaks are exceedingly more attractive when in great condition; and here is the proof.