Audemars Piguet Tourbillon Openworked White Gold — Skeleton Dial | Ref. 26399CR.OO.D002CR.01

Among the most technically demanding complications in horology, a tourbillon acquires still greater significance when its movement is laid bare for inspection. Reference 26399CR.OO.D002CR.01 — identified by its handle as the Code 11.59 Flying Tourbillon Chronograph — presents this conjunction in a 41 mm white gold case whose architecture follows the multi-layered circular geometry of the Code 11.59 family. The round outer case, intermediate cushion structure, and inner round bezel create a complexity of form visible even at the case edge, rewarding examination from every angle.

The movement, a variant of the Calibre 2954 or related flying tourbillon calibre with chronograph complications, suspends the tourbillon cage at 6 o'clock where it rotates once per minute within an openworked landscape of bevelled bridges, perlage, and Côtes de Genève decoration. A flying tourbillon — lacking the upper bridge that conventional cages require — creates the illusion of the cage floating freely within the movement architecture, a finishing choice as dramatic visually as it is demanding technically. The sapphire caseback and transparent dial work in concert to ensure the movement is never hidden.

Luminous hands trace their path over the skeletal movement while a leather strap with AP folding deployant clasp keeps the 41 mm case ergonomically sound across extended wear. Water resistance to 30 metres acknowledges real-world practicality without compromising the formal character of the piece. This reference is positioned for the serious collector who regards the flying tourbillon chronograph as the ultimate proof of a Maison's mechanical capability — and who understands that white gold openworked execution elevates that statement to art.