May 06, 2026
Brand: Audemars Piguet
Model: Royal Oak Chronograph 50th Anniversary Ref.26240ST
Year: 2022
Case: 41mm
Material: Steel
Dial: Black
Functions: Chronograph
Movement: Cal. 4401 Automatic
Bracelet/Strap: Integrated Bracelet
Accessories: Original Box & Papers
Warranty: 24 Months
The Audemars Piguet Royal Oak Chronograph by Audemars Piguet has seen numerous versions and reinterpretations since its launch in 1997–1998. Perhaps the most significant came in 2016 when, with Ref. 26300, it moved from 39 mm to 41 mm.
In 2022, to celebrate the 50th anniversary of the Royal Oak, the Manufacture introduced the 41 mm case in Ref. 26240. This new version includes the Royal Oak Chronograph 50th Anniversary Ref. 26240ST presented here, to which Audemars Piguet applied subtle modifications to the case, widening the bevels to enhance the play of light between satin-brushed and polished surfaces and giving the watch a broader, more streamlined appearance. The caseback has been slightly integrated into the central part of the case to ensure greater comfort on the wrist. To highlight the new design, the first four links of the bracelet have a trapezoidal shape that progressively tapers; they are also thinner along their entire length and therefore lighter, ensuring greater comfort and improved ergonomics. On the dial, the faceted luminescent indices have been standardised in terms of size and spacing across the collection, to ensure harmony in proportions. The applied AP logo and the Audemars Piguet signature have been replaced by a new applied logo, in which each letter is connected to the others through links approximately the thickness of a human hair. This logo on the 50th anniversary models echoes the design and structure of the one introduced in the Code 11.59.
Inside the steel case beats the in-house automatic chronograph movement Calibre 4401. It features a column wheel and flyback function. A patented reset mechanism ensures that each of the counter hands instantly returns to zero when reset. The calibre has a 70-hour power reserve, beats at 28,800 vibrations per hour and features the special “50 years” commemorative oscillating weight. The example presented here is full set.