Patek Philippe Nautilus Travel Time Chronograph 5990/1A-001

Steel case, diameter 40.5mm. Patek Philippe Calibre CH 28-520 C FUS self-winding movement, 28,800vph, 34 jewels, 370 parts and a power reserve of 45 – 55 hours. Central rotor in 21K gold, unidirectional winding. Balance: Gyromax®. Vibrations/hour: 28,800 (4 Hz). Balance spring: Spiromax®. Hallmark: Patek Philippe Seal.

Black graduated dial; gold applied hour markers with luminescent coating, the travel time and chronograph mechanisms, signed with the ‘PP’ seal, can be viewed through the sapphire case-back.

Travel Time function indicates local-time (where the wearer is) using solid, luminous hands and home time (where the wearer lives) using a skeleton hour-hand) with additional day/night windows. Date (linked to local time), is indicated at 12 o’clock.  When local time is the same as home time, the skeleton hour-hand is totally hidden behind the solid hour-hand using the pushers on the left-hand side of the case.

Chronograph with central fly-back indicator and 60-minute counter at 6 o’clock is operated via pushers on the right-hand side of the case.

Complete with Outer Box, Inner Wooden Presentation Box and Pin Stylus, the Certificate of Origin is dated 2016; together with original Instruction Manual and other documentation, these papers are all contained in a Patek Philippe leather wallet.

This wonderful watch combines two of Patek’s most useful complications – a travel time and a chronograph – housed in an iconic Nautilus steel case.  Arguably the most sought-after sports watch format of present times, this piece is presented on its original steel bracelet, fastened with a signed, folding Nautilus clasp. Water-resistant to 120 metres and accurate to -3/+2 seconds per day, fewer than 100 examples are believed to have ever been produced.