This Patek Philippe reference 5810/1G places its owner among just 2,000 collectors worldwide, holders of the ultra-thin white gold Nautilus released to mark the collection's fiftieth anniversary and the closest the line has come to Gérald Genta's original two-hand conception. It runs the self-winding Calibre 240, the manufacture's celebrated micro-rotor movement, its 22K gold rotor engraved to mark the half-century since 1976. The 18K white gold case measures 6.9mm in thickness across 41mm, slim enough to disappear beneath a cuff yet unmistakable on the wrist. The sunburst blue dial carries the horizontal embossing that has defined the Nautilus since its debut, now pared back to hours and minutes alone. In stripping the watch to its essence, Patek has made its purest statement yet of the design that reshaped the luxury sports watch.