Royal Oak 37mm Flying Tourbillon Extra-Thin "50th Anniversary" - Steel

The Audemars Piguet Royal Oak Flying Tourbillon Extra-Thin Ref. 26660ST.OO.1356ST.01 represents one of the most significant technical achievements in contemporary watchmaking. Released to commemorate the 50th anniversary of Gerald Genta's revolutionary design, our specialists consider this reference a masterclass in miniaturization and mechanical refinement. The addition of a flying tourbillon—where the regulating organ appears to float without visible support—to the already challenging Royal Oak architecture demonstrates AP's technical prowess and continued innovation five decades after the original Royal Oak's debut.

Technical specifications reveal remarkable engineering: The ultra-thin self-winding Calibre 2968 measures just 3.4mm in height while incorporating a flying tourbillon visible at 6 o'clock, operating at 21,600 vibrations per hour with 50 hours of power reserve. Case construction maintains the Royal Oak's distinctive 37mm octagonal profile with exposed screws, integrated bracelet with AP folding clasp, sapphire crystal with anti-reflective coating, and exhibition caseback revealing Geneva stripe decoration, hand-beveled bridges, and the solid platinum peripheral rotor that enables the slim profile. The striking plum purple dial—paying homage to AP's heritage colors from the 1990s—features a sunburst finish that transitions from deep purple to burgundy depending on lighting conditions.

Master Luxury presents this extraordinary timepiece in excellent condition with original box and warranty card dated August 2023. Our experts have verified that the flying tourbillon maintains precise regulation in all positions, confirming the exceptional quality of AP's finishing and assembly. This investment-grade anniversary piece represents the perfect fusion of historical significance and technical excellence, offering genuine watchmaking innovation wrapped in AP's most iconic design. This exceptional reference delivers horological substance beyond mere limited edition numbering, making it a centerpiece for any serious collection.