Initially launched with a grey dial and fitted on a leather strap, the reference 5726A/1A-001 Nautilus Annual Calendar featured a well-proportioned 40.5mm case and perfectly symmetrical dial layout with two apertures at 12 o’clock indicating the day and month. At 6 o’clock, the moon phase and 24-hours are indicated via a subsidiary dial with an aperture indicating the date below, inspired by the brand’s vintage perpetual calendar models. A second generation Nautilus Annual Calendar was launched in 2012 paired with a matching stainless steel Nautilus bracelet and stunning white dial with contrasting black markers like the present reference 5726/1A-010. Today, Patek Philippe’s annual calendar Nautilus with blue dial (014) is still offered within their collection.

The present example is a wonderful representation of this milestone timepiece. The watch is offered in excellent condition with its Certificate of Origin and presentation box.