The Patek Philippe Annual Calendar Regulator Ref. 5235/50R-001 is one of the manufacture’s most distinctive and unconventional creations, combining classic watchmaking traditions with a strikingly contemporary aesthetic.

Crafted in 18K rose gold, the elegant 40.5mm case is paired with a sophisticated two-tone graphite and ebony-black dial inspired by historic regulator clocks. Its vertical layout separates the hours, minutes, and seconds into individual displays, creating a highly technical yet beautifully balanced appearance.

Beyond its unique regulator-style display, the 5235/50R-001 incorporates Patek Philippe’s Annual Calendar complication, indicating the day, date, and month while requiring correction only once per year at the end of February. The combination of these complications makes this reference particularly unusual within the modern Patek Philippe collection.

Powering the watch is Patek Philippe’s ultra-thin self-winding Caliber 31-260 REG QA, featuring a 22K gold micro-rotor and exceptional finishing visible through the sapphire-crystal exhibition caseback. Distinctive, technically sophisticated, and produced in comparatively limited numbers, the 5235/50R-001 is a compelling choice for collectors seeking a Patek Philippe outside the more conventional models.