Audemars Piguet
Royal Oak Chronograph 41
26331ST
The Royal Oak Chronograph scaled up for the modern wrist.
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Overview
The Audemars Piguet Royal Oak Chronograph 41 reference 26331ST represents the larger-format expression of the iconic Royal Oak chronograph family in stainless steel. Its 41 mm case houses the in-house Calibre 2385, a column-wheel integrated chronograph movement long associated with the Royal Oak line. The reference was produced across a focused window in the late 2010s and into the early 2020s, offering the Grande Tapisserie dial in a choice of blue, black, or silver with contrasting subdials.
History
The Royal Oak Chronograph has been a pillar of the Royal Oak collection since the line's expansion beyond the original three-hand model, building on Gérald Genta's celebrated octagonal bezel design first introduced in 1972. Reference 26331ST entered production in 2017, bringing the chronograph to the 41 mm case size that had become the contemporary standard for the Royal Oak. The reference sat alongside the longer-running 39 mm chronograph references, catering to collectors who preferred a more substantial presence on the wrist. Its production concluded around 2021, making it a relatively focused chapter within the broader Royal Oak Chronograph history.
Notable points
- 41 mm stainless steel case with the Royal Oak's signature eight-bolt octagonal bezel and integrated bracelet.
- Calibre 2385 is an integrated, column-wheel chronograph movement developed in-house by Audemars Piguet.
- Grande Tapisserie dial — the fine hobnail guilloché pattern synonymous with the Royal Oak — is rendered in blue, black, or silver variants, each with contrasting subdials.
- The 41 mm sizing marked a deliberate step up from the preceding 39 mm Royal Oak Chronograph references, reflecting evolving collector preferences.
- Produced from 2017 to approximately 2021, the reference occupies a distinct and collectible transitional period in the Royal Oak Chronograph lineage.
Specifications
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