Spike gets the drop on Wyatt and points his pistols at him, pulls the trigger and discovers he s out of bullets. He throws down the pistols and jumps on Wyatt. During the fight scene you can clearly see the pistols still in the holsters. Later in the fight the pistols are gone.
A man nails a poster to a pole then gets shot by Spike, the poster falls on the floor, after Spike rides past on his horse, the poster is back on the pole.
Ned Buntline tells Earp and his friends that he personally asked Samuel Colt to build the customized revolvers he is giving them. However, the story takes place in 1878, while Samuel Colt died in 1862.
As Wyatt Earp takes his girlfriend out to where he wants to have his farm 2 very modern looking picnic tables are in the background.
In the version that's just been screened on Sony Movies TV in the UK there's a bizarre b & w clip immediately before the one of traffic in San Francisco showing a British Great Western Railway steam train pulling into a small station. The loco is nothing like an American one. Perhaps it was meant to be an American train transporting the reporter towards the city. Bizarre.
Car tire tracks in grass when father confronts the sons about what happened and how the younger got shot.