Originally Posted by TDog
Yes, that would have been a screw up, like having modern-style football goalposts in movies set in the 1960s.
Reminds me of this image from the movie "Good Night and Good Luck," which is about Edward R. Murrow's news broadcasts in the early 1950s. Take a look and see if you can see what doesn't belong in 1954 (answer in white below the picture)
Plastic water bottle
I read about the tens of millions of dollars that are spent making a movie and wonder sometimes if any of that money was spent learning about the story they're telling.