Few companies can claim the historic archive of renown watches that Patek Philippe possesses

formula of angles and degrees with the time difference in Greenwich, England where time 0 starts. Used together with a sextant and radio signal, the watch helped allow simpler, faster and more precise positioning. Two particularly noteworthy exemplars of such hour-angle – or siderometer – wristwatches were developed cent of the harnesses that allowed pilots to keep their survival kits readily deployable in emergencies; Ref 7234R-01 has a rose-gold buckle and vintage brown calfskin strap; Ref 7234G sports a white gold buckle on a shiny navy blue calfskin strap. by Patek Philippe and are now both on display at the Patek Philippe Museum.

Perpetual calendars are amongst the most complicated of any timepiece, requiring a movement composed of hundreds of parts arranged in layers, which is why these large complications were historically housed in the bigger dimensions of a pocket watch.

In 1925, Patek Philippe changed all that when the company introduced its first perpetual calendar wristwatch. The watch presented the month, date and day in three separate windows.

The advent of GPS put an end to all that, but Patek Philippe pays homage to those glory days with the Calatrava Pilot Travel Time.

It is a precise and dependable timekeeping instrument with a time-zone function that is a boon for today’s travelers. It keeps track of time in two zones, and is designed to be worn by women as well as men thanks to its medium-sized format (37.5mm.)

A self-winding movement (324 S C FUS caliber) and skeleton hands display home time while a solid hand indicates local time. There’s also day/night indication for both the local and home time. Another nod to history is its clevis prong buckle, reminis-

As a result, the case to accommodate it had to be rather thick. But once again, the experts at Patek Philippe went to work to come up with a technically-feasible, aesthicallyattractive solution. For the first time, Patek Philippe features a Perpetual Calendar wristwatch with a completely inline perpetual calendar display that had previously only existed in pocket watches that were originally created for the American market. Ref. 5236P features a new self-winding movement (31-260 PS QL caliber) as well as the three patent pending applications that were necessary for the innovations embedded in the mechanism, all within the small, thin, wearable confines of a wristwatch.