Released in 2022 to celebrate the 50th anniversary of the Royal Oak, the Audemars Piguet Royal Oak Chronograph reference 26240 in stainless steel is one of the most acclaimed models from the brand’s latest collection. Featuring a sporty 41mm case and a striking khaki green dial, this reference is not only visually captivating but also technically advanced. It is the first Royal Oak Chronograph to be equipped with Audemars Piguet’s in-house automatic caliber 4401, a significant upgrade over the previous Frédéric Piguet caliber 1185. The new movement introduces a flyback chronograph function, vertical clutch, and column wheel, enhancing both functionality and precision.

The introduction of the caliber 4401 has also allowed for subtle yet impactful design refinements. The dial now features equally sized subdials, creating a more balanced and symmetrical layout, with the date window repositioned closer to the edge at 4 o’clock for a cleaner aesthetic. The case has increased slightly in thickness by 1.4mm, yet it retains the iconic Royal Oak silhouette and remains exceptionally comfortable on the wrist.

Marking a historic milestone in the Royal Oak’s legacy, this 50th Anniversary Chronograph is both highly desirable and sought-after. The present example, preserved in excellent condition and accompanied by its original accessories, offers a rare opportunity to own a piece of Audemars Piguet’s horological history.