No Way The Goonies Found That Playing Card
Mikey discovers a 1973 Topps baseball card of Lou Gehrig in Chester Copperpot’s wallet in The Goonies. While that is an incredible find, Chester’s remains had been there since the 1930s, some 40 years before the card was created. Perhaps the card is even more valuable because it appears to have required magic to enter the scene.
This type of error is a little more significant than the others on this list. You must ensure that there is enough continuity for viewers to fully immerse themselves in the film.