Audemars Piguet Royal Oak Perpetual Calendar 25554BA

Audemars Piguet Royal Oak Perpetual Calendar

This Royal Oak Perpetual Calendar is offered in the UK by a business seller. A highly desirable perpetual calendar version of the Royal Oak crafted in 18K yellow gold, featuring a seldom seen 'Yves Klein' blue dial. Presented with a display box, and certificate of origin and guarantee. The vendor confirms the watch to be in good working order. Please note: this example was originally delivered with a golden dial and was later fitted with the 'Yves Klein' blue dial by Audemars Piguet at the request of a previous owner. First introduced in 1972, the Gérald Genta-designed Royal Oak by Audemars Piguet has become an icon of modern watchmaking and is among the world’s most sought-after luxury sports watches. First launched in steel as a simple time-only watch, the Royal Oak collection now comes in many forms, but few are as emblematic of the watchmaker’s technical prowess as the perpetual calendar. This yellow gold example, reference 25554BA, presents an uncommon configuration: while originally delivered with a golden dial, it was subsequently returned to the manufacturer and fitted, at the client’s request, with a blue “Klein” dial more typically associated with steel variants. The dial is of a later, second-generation type but does not feature a leap year indication, consistent with early executions of the model. The 18K yellow gold ‘Royal Oak’ hands and hour markers match the watch’s brushed and polished case, reflecting the brand’s well-known attention to detail. The contrast between the yellow gold case and the vivid blue dial gives the watch a distinctive aesthetic. As one of the design hallmarks of the Royal Oak, an expertly hand-finished integrated bracelet and AP-branded folding clasp secures the watch to the wrist. Beneath the ‘Royal Oak’-stamped caseback beats Audemars Piguet’s calibre 2120/2800, a highly technical automatic movement with an approximate 40-hour power reserve.