Nicknamed the “piano dial” for its bold black-and-white markers laid across its face, this discontinued-since-2019 reference is the only Annual Calendar Nautilus with a white dial on a steel bracelet. Built for collectors who value Holy Trinity pedigree and a practical complication in quiet steel, the kind who would rather own the rare pressing than the radio hit.

Presents itself in mint condition with little to no signs of wear. A silvery-white piano dial combines horizontal embossed grooves with crisp black-bordered baton markers for a sharp, architectural look. Deep-blue moon phase at six o’clock carries a moon across a star-set sky, adding depth to an otherwise monochrome face. An integrated steel bracelet alternates mirror-polished center links with satin-brushed outer links, shifting dynamically between gloss and matte with each turn of the wrist.

Functions include hours, minutes, central seconds, day, date, month, moon phase, and a 24-hour indicator. Screw-down crown controls manual winding and pulls out fully to set the time, while four recessed correctors on the case flanks, operated with the Patek stylus, adjust the day, date, month, and moon phase. Annual calendar logic tracks months of 30 and 31 days, requiring correction only once a year at the end of February. Self-winding caliber delivers a 45-hour power reserve for sustained running between wears, housed in a steel case water-resistant to 120 meters for everyday durability. 

Comes as a full set, double-boxed with Patek Philippe Certificate of Origin, leather document wallet, the Patek Philippe Register, instruction booklets, and setting stylus.

Steel-sport ease and a useful complication rarely share a wrist, yet the white dial sits scarcer than its black and blue siblings. A design Gerald Genta sketched on a napkin, inspired by a sailor’s porthole, now wearing an Annual Calendar in white. Looking for a steel Patek suited to both business and weekend wear? With production ended, a reference like this one is worth securing now.