Carrying a blue dial from the original 1976 Nautilus and the annual calendar Patek invented and patented in 1996, ref. 5726/1A-014 packs serious complication into a steel porthole-shaped case. Made for the collector who wants more on the wrist than a time-only model while keeping that iconic shape, it earns a spot in any Patek-leaning collection.

Presents itself in mint condition with little to no signs of wear. Sunburst blue dial fades to black at the rim, shifting shade as your wrist moves and revealing the fine horizontal embossing pressed into the surface, while white gold applied markers and hands sit bright and crisp against it. Rounded octagonal bezel alternates highly polished and satin finishing, throwing gloss against matte as light travels across it. Sapphire caseback opens onto the self-winding movement, its 21K gold central rotor sweeping over 339 finely finished components stamped with the Patek Philippe Seal.

Functions include hours, minutes, seconds, date, day, month, annual calendar, moonphase, and a 24-hour indication. Once unscrewed, the screw-down crown winds the movement in its resting position and sets the time when pulled out. Recessed case-side correctors, operated with the supplied setting pin, adjust the calendar and moon phase. Annual calendar mechanism tracks 30 and 31 day months on its own, needing just one correction each year at the end of February. A 45-hour power reserve keeps the watch running off the wrist between wears, while the 30-meter water resistance provides essential protection against everyday splashes.

Comes as a full set, boxed with warranty documentation.

Few steel sports watches carry both Gérald Genta’s 1976 design language and a working calendar complication, a combination that separates this reference from nearly everything in its class. Sporty enough to dress down yet refined enough to dress up, that iconic 1976 architecture carries the reference effortlessly across nearly every setting. Inquire today to add this standout to your collection.