Tony Franciosa wears a Rolex GMT-Master

Peter Neal writes mysteries, and someone in Rome has started using them as instructions. In Dario Argento's Tenebre (1982), Anthony Franciosa plays Neal, an American novelist who flies in for a book tour and finds the city restaging the killings from his pages. Argento wrote the screenplay himself, and it is one of his most self-referential films: a horror director making a movie about an artist whose work is blamed for real violence.

Neal is said to wear a Rolex GMT-Master "Pepsi," the version with the red-and-blue bezel that lets a traveler read a second time zone at a glance. Rolex built the GMT-Master in the mid-1950s with Pan American pilots in mind, for travelers crossing time zones.