Patek Philippe Complications White Gold — Annual Calendar Chronograph Silvery Opaline Dial | Ref. 5960/01G-001

To unite an annual calendar with a chronograph in a single movement is among the more demanding briefs in the complicated watchmaker's repertoire — and Patek Philippe's response, the Calibre CH 28-520 IRM QA 24H, is an engineering achievement of considerable elegance. The 5960/01G-001 houses this self-winding movement in a 40.5 mm white gold case whose silvery opaline dial presents day, date, and month apertures alongside a 60-minute mono counter and 12-hour register, all read at a glance through the logic of a layout refined by decades of Patek design practice.

Blackened gold applied hour markers stand against the opaline surface with architectural clarity, while the sapphire-crystal display back transforms every setting adjustment and winding cycle into a viewing opportunity. The annual calendar mechanism requires just one manual correction per year, at the end of February — a convenience that no perpetual calendar owner will fully appreciate until they have spent a decade setting a lesser complication. Power reserve runs to approximately 45–55 hours, giving the wearer a comfortable buffer over a long weekend.

A vintage brown calf leather strap on a clevis prong buckle completes a watch that is simultaneously a technical instrument and a work of decorative art. Water resistant to 30 metres and carrying the full weight of Patek Philippe's reputation for complications, the 5960/01G-001 is a collector's reference — the annual calendar chronograph that remains the benchmark against which all others are measured.