
Audemars Piguet
Royal Oak Perpetual Calendar 41
26574ST
The Royal Oak's perpetual calendar ambition rendered in 41 mm steel.
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Overview
The Audemars Piguet Royal Oak Perpetual Calendar ref. 26574ST brings one of haute horlogerie's most demanding complications to the iconic octagonal-bezel sports-luxury case. Offered in a 41 mm stainless steel case, it pairs the Grande Tapisserie dial — available in blue or silver — with a full perpetual calendar display. Calibre 5134 powers the watch, integrating day, date, month, and moon-phase indications without requiring manual correction until 2100.
History
Introduced in 2015, the 26574ST represented Audemars Piguet's commitment to placing grand complications within the Royal Oak's democratically proportioned 41 mm format, making perpetual-calendar watchmaking accessible to a broader range of wrist sizes. The reference remained in production until approximately 2021, during which time it became a benchmark for stainless steel perpetual calendars in the sports-luxury segment. Collectors have consistently regarded it as a refined expression of the Royal Oak's enduring design language, first conceived by Gérald Genta in 1972.
Notable points
- 41 mm stainless steel case retains the Royal Oak's signature eight-bolt octagonal bezel and integrated bracelet.
- Calibre 5134 is a self-winding perpetual-calendar movement requiring no date correction until the year 2100.
- Grande Tapisserie dial pattern — a hallmark of the Royal Oak line — is offered in both blue and silver variants.
- The perpetual calendar display encompasses day, date, month, leap-year cycle, and moon-phase indications.
- Produced from 2015 to approximately 2021, the reference occupies a notable chapter in the Royal Oak's complication history.
Specifications
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