Matt Damon's cowboy-hat-adorned Carroll Shelby wears a Heuer Carrera Reference 7753 SN. Now for all the talk of period accuracy this one misses
link the mark by a few years. The film takes place for the
link most part in 1966 but the 7753 did not hit the market until
link 1970. This is what the good folks on IMDB would call a goof but not a drastic one by any means. It would be far more egregious for him to have worn a modern Carrera.