Audemars Piguet Royal Oak Extra-Thin Steel — Rich Purple Dial | Ref. 26660ST.OO.1356ST.02

The Royal Oak Tourbillon Extra-Thin represents Audemars Piguet's most technically demanding interpretation of Genta's 1972 masterpiece: a flying tourbillon — that weightless, cage-free regulator floating at 6 o'clock with no bridging structure above it — nestled within a movement slim enough to honour the archetype's defining flatness. Reference 26660ST.OO.1356ST.02 deploys this feat in a 37 mm stainless steel octagonal case, a format that broadens the watch's appeal while preserving every gram of its horological drama.

Calibre 2950, the movement within, is a hand-wound flying tourbillon ticking at 21,600 vph with a notable 65-hour power reserve — generous for a tourbillon of such slenderness. The dial is where this reference truly arrests attention: a deep, saturated purple that occupies the full spectrum between violet and plum depending on light conditions. The Petite Tapisserie guilloche pattern — AP's signature micro-engraved grid — gives the surface a living, three-dimensional quality that shifts with every movement of the wrist, ensuring the flying tourbillon carriage at 6 o'clock is never without competition for the eye.

An 8-screw polished steel bezel and a stainless steel integrated bracelet secured by AP's folding clasp complete a specification that is simultaneously austere and spectacular. The transparent sapphire caseback frames the tourbillon's architecture in all its skeletal glory. Rated to 50 metres water resistance and supplied with full box and papers, the 26660ST.OO.1356ST.02 is the rare piece that a technical connoisseur and a colour aesthete can both covet without compromise.