Worn by: Ben Affleck as Tony Mendez
Reference: Rolex Sea-Dweller
Brand: Rolex
In Argo, based on the real story of CIA technical officer Tony Mendez, Ben Affleck is tasked with extracting six Americans holed up with the Canadian ambassador in Tehran, Iran after militants stormed the US Embassy on November 4th, 1979. Disguised as a film producer scouting locations for a science fiction film in Tehran, Affleck's character wears a Rolex Sea-Dweller Deepsea reference 116660, a watch released by the Crown in 2008. This was a significant anachronism, as the film is set in 1979. Hodinkee reported an urban legend that the prop department provided a replica of a period-correct Rolex Submariner for Affleck to wear, but the actor preferred a genuine Rolex. Any Rolex from the era, but especially the Submariner, would have made perfect sense for a posh Hollywood producer wearing a rugged luxury watch on his adventurous location-scouting trip.
Source: https://www.watchesofespionage.com/blogs/woe-dispatch/hollywood-watches-of-espionage-part-ii