The grave marker seen in the film "Tombstone" at the beginning when the Earps enter the town is real!

When the Earp family arrives in Tombstone, Arizona (in the film "Tombstone") the camera spans a cemetery with a unique grave marker. The grave marker says "Here lies Lester Moore, Four slugs from a .44, No Les No more."

There is an actual grave stone in Tombstone, Arizona with that epitaph. The film was originally written as an epic, but later trimmed down to focus on the Earp family.

Wyatt Earp’s fifth cousin, Wyatt Earp, plays Billy Claiborne in the film. The director wanted everything to be as authentic as possible. Therefore, all the actors wore wool suits, as was customary in that time period.

The director was quoted as saying that all lightning and mustaches were real. The big storm that took place the night the cowboys attacked the Earp family in the film wasn’t in the script. The storm blew in and the director decided to film with the storm.

(Source)