Audemars Piguet Code 11.59 18-Carat Sand Gold & Black Ceramic — Sapphire Dial with Black External Zone | Ref. 26397QS.OO.D002KB.01

Conceived as a grand statement for Audemars Piguet's 150th anniversary, the Code 11.59 Grande Sonnerie Carillon Supersonnerie in 26397QS.OO.D002KB.01 represents the pinnacle of the manufacture's acoustic watchmaking tradition. Unveiled in 2025, this exceptional complication unites the avant-garde architecture that defines the Code 11.59 — itself a tribute to the spirit of perpetual reinvention first championed by legendary designer Gerald Genta — with one of horology's most demanding feats of sonic engineering. The result is a timepiece that is as intellectually formidable as it is visually arresting.

At its heart beats Calibre 2956, a hand-wound movement of extraordinary ambition, housing a Grande Sonnerie Supersonnerie with Petite Sonnerie and Minute Repeater. Comprising 498 components including 53 jewels, the movement operates at 3 Hz (21,600 vph) and delivers a power reserve of 48 hours. The 29.9 mm calibre, just 5.9 mm thick, achieves a sound quality that is the product of Audemars Piguet's patented Supersonnerie technology — an innovation that dramatically amplifies tone clarity and projection. The case back, engraved with the anniversary logo, opens to reveal this mechanical marvel through a double curved glareproofed sapphire crystal.

The 41 mm case, forged from 18-carat sand gold and matched with black ceramic, delivers a material contrast of rare sophistication. The sapphire dial with black external zone frames luminescent sand gold-toned hour markers and hands, while the small seconds at 6 o'clock adds classical balance. A black textured rubber-coated strap with calfskin lining, secured by an 18-carat sand gold AP folding clasp, ensures a supple and refined wearing experience. Produced in extremely limited numbers and priced at $350,485, this reference is destined for the most discerning horological collectors who demand the highest tier of complicated watchmaking.