Some 150 years ago, a visionary watchmaker transformed his passion for the tourbillon into a stunning display of horological technique unlike anything ever seen before. Fortunately for today's aficionados, Girard-Perregaux has brought it back to life with versions that remain true to the spirit of the original.

Teams from the Federation of the Swiss Watch Industry ranged the aisles of the Hong Kong Watch & Clock Fair to track down counterfeiters and unauthorised users of the "Swiss" indication of origin, with positive results.

From the time of its launch in 1963, the Rolex Cosmograph was linked to motor sport and to one event in particular: the endurance race on the legendary Daytona circuit. Taking functionality to an extreme, its style has made it an icon among chronographs.

Born in 1976, reborn in 2006, the Nautilus has stayed true to its origins nonetheless. Recognisable for an extravagant design tempered by elegance, it is now an icon among Patek Philippe's collections, and one of the most celebrated luxury sport watches.

Made for the French military's elite combat divers, the Fifty Fathoms was the first real dive watch, with a design so perfectly adapted to its role that it became the definitive diving watch concept. Today's Fifty Fathoms covers a complete collection of sport watches at Blancpain.

The apogee of the 'plain' chronograph in terms legibility and functionality was reached with the inexplicably rare central minute complication in the early 1970s. The big question among watch lovers and connoisseurs is why the big players no longer produce such marvels…