The Patek Philippe Nautilus Chronograph (Reference 5980/1A-019) with a silvery-white dial is one of the rarest and most distinctive steel sports watches ever produced by the manufacturer. Launched in 2012 and abruptly discontinued around 2014, it features a short two-year production window that has made it a highly liquid, prized collector's item.

• Case Dimensions: 40.5 mm diameter (measured from 10 to 4 o'clock) with a robust 12.2 mm to 12.5 mm thickness. 

• The Movement: Powered by the in-house, self-winding Caliber CH 28-520 C. It features a heavy 21-karat gold central rotor, column-wheel mechanism, vertical clutch, and a 45–55 hour power reserve. 

• Monocounter Sub-dial: Consolidates both the 60-minute and 12-hour chronograph registers into a single, clean co-axial sub-dial tracking system positioned neatly at 6 o'clock. 

• Flyback Function: Allows the wearer to reset and instantly restart the stopwatch hand with a single press of the bottom pusher, without stopping the mechanism first. 

• Case & Bracelet: Solid stainless steel case boasting a porthole-inspired architecture, integrated steel bracelet with a Nautilus fold-over safety clasp, and a sapphire crystal exhibition caseback. 

• Water Resistance: Rated to 120 meters (400 feet) with a secure screw-down crown.