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Audemars Piguet Royal Oak Perpetual Calendar 41 — 26574ST

Audemars Piguet

Royal Oak Perpetual Calendar 41

26574ST

The Royal Oak's perpetual calendar ambition rendered in 41 mm steel.

Estimated market value
$106,000
Confidence: High

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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

Brand
Audemars Piguet
Collection
Royal Oak
Reference
26574ST
Years of production
2015 – 2021
Case
41mm Stainless steel
Case material
Stainless steel
Case diameter
41 mm
Movement
Cal. 5134
Crystal
Sapphire
Dial
Grande Tapisserie with calendar subdials (blue, silver)
Bezel
Octagonal steel with 8 hexagonal screws
Bracelet / strap
Integrated steel bracelet
Water resistance
20 m
Power reserve
40 h
Complications
Perpetual calendar, Moonphase
Type
Perpetual calendar
Worn as
Men's
Also known as
ロイヤルオーク, 皇家橡树, 皇橡, AP皇橡

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