Patek Philippe Annual Calendar Regulator ref.5235/50R-001 from 2021

Patek Philippe revisits the unique style of its Annual Calendar Regulator by presenting it in rose gold, paired with a two-tone dial in graphite and ebony-black with a vertical satin finish.

The caliber 31-260 REG QA self-winding movement, designed specially for this model, is notable for its high-tech regulator, incorporating a Pulsomax^® escapement and a Spiromax^® balance spring in Silinvar^® – both developed by the “Patek Philippe Advanced Research” department.

Within this category, annual calendar watches stand out. Unlike perpetual calendars, which require minimal adjustments for decades, annual calendars are designed to automatically correct for months of 30 and 31 days, without the need for manual intervention. Only the transition from February to March requires a small adjustment. This feature, driven by an additional module in the movement, showcases the contemporary watchmaking ability to balance tradition and convenience.

The present watch is in unpolished conditions, rarely worn example.

Brand: Patek Philippe
Model: Annual Calendar Regulator
Reference:5235/50R-001
Year of Manufacture: 2021
Material: Rose Gold
Dimensions: 40.5mm
Crystal Material: Sapphire
Machinery Type: Self-winding mechanical movement.
Caliber: 31‑260 REG QA.
Strap Measurement: 20mm
Strap: Alligator skin with square scales, hand-stitched, matt black.
Buckle: Rose Gold
Box/Papers: Watch and box
Mechanical Operation Warranty: 6 Months