Royal Oak Equation of Time "London"

An exceptional piece of haute horlogerie, the Audemars Piguet Royal Oak Equation of Time “London”, reference 26603OR.OO.D092CR.01, is a highly collectible and technically complex wristwatch from AP’s prestigious Royal Oak collection. This certified pre-owned model from 2013 is offered in very good condition, delivered with its full original set, and requires a service to restore peak mechanical performance.

Crafted in 18K pink gold, the 42 mm case showcases the signature Royal Oak design—iconic octagonal bezel with exposed screws, satin-brushed surfaces, and an integrated aesthetic. The elegant brown alligator strap is secured with an Audemars Piguet pink gold folding clasp, completing the luxurious feel.

The dial, marked “London” at 6 o’clock, features an intricate layout combining several astronomical and calendar complications: equation of time, sunrise and sunset times, perpetual calendar, moonphase, and power reserve indicator. These are beautifully arranged on a rich brown dial with applied gold indices and hands, protected by a sapphire crystal.

At the heart of this masterpiece lies the Audemars Piguet Calibre 2120/2808, an ultra-thin self-winding movement with multiple complications—one of the few wristwatches in the world to display the equation of time in real time. While the watch is currently functional, it requires a service to ensure accuracy and longevity.

As a certified pre-owned Audemars Piguet timepiece, this Royal Oak Equation of Time has been authenticated, and is sold with its full original box and papers. It represents an extraordinary opportunity for collectors seeking a rare, sophisticated, and historically important AP complication watch.