Factual error: As Ray is driving around the country selling his machines, we see town mileage signs that are green with white lettering. In the early 50s they were white with black lettering.
Factual error: The film is set in 1987 and Eddie ends up in hospital. However the bed we see him on is a fairly modern one with hand controls to raise and lower the bed. Not available in 1987.
Factual error: In the opening shot of the movie while our characters are driving down the street in 1951, there is a post-2000, white Toyota Tercel. It's the 2nd car on the left. The car is removed from the next scene. (00:00:50)
Factual error: The limo shown is a 1990 (or later) Cadillac. It has large halogen headlamps and not the dual headlamps of a 70-71.
Factual error: The jacket blurb and plot synopsis for "Anthropoid" are historically and factually incorrect in stating that Heydrich was "third in command" of Nazi Germany. He was not; there was a chain of Nazi hierarchy above him and any historian of Nazi Germany will verify that. Unfortunately, Rotten Tomatoes perpetuates this inaccuracy by using the same jacket blurb in its own plot summary of the movie.
Factual error: When the characters are drowning on stakes in the ocean there is a modern yacht in the background.
Factual error: When Anita Hill is in her hotel room waiting to testify she is watching the Texas v. OU football game. In the movie the date for that scene is Friday, October 11, 1991. The Texas v. OU football game was played on Saturday, October 12, 1991.