Audemars Piguet Royal Oak Tourbillon Extra-Thin Openworked Rose Gold — Skeleton Dial | Ref. 26518OR.OO.1220OR.01

The Royal Oak Tourbillon Extra-Thin Openworked represents the most technically demanding intersection of Genta's octagonal silhouette and the manufacture's haute horlogerie ambitions. Ref. 26518OR.OO.1220OR.01, produced between 2017 and 2022, is a 41 mm 18-carat rose gold tour de force in which the movement itself becomes the dial. Every bridge, wheel, and lever is individually hand-bevelled, anglé, and polished to the standard that distinguishes a finished plate from a movement that is also a work of art.

The hand-wound tourbillon calibre — AP's extra-thin flying tourbillon architecture — is crafted to achieve the slimmest possible profile while housing a one-minute tourbillon regulator that compensates for the positional errors of gravity on the escapement. The openworked approach eliminates every non-structural surface, demanding that even the spaces between components become part of the aesthetic composition. Viewing the tourbillon carriage rotate through the sapphire crystal is a reminder that watchmaking, at its summit, is inseparable from sculpture.

The 18-carat rose gold case maintains the Royal Oak's signature octagonal bezel and integrated bracelet, the H-head screws and finishing contrasts as immaculate on this jewellery-grade piece as on the entry-level steel. The screw-down crown and rose gold bracelet complete an ensemble that positions this watch at the very pinnacle of the Royal Oak family hierarchy. Offered with box and papers, ref. 26518OR is a defining collector's acquisition from the AP manufacture's most celebrated decade.