Well, the inset might be where we should look.
It is not the highest quality, but it appears to me that the guy in the black jacket has no thumb going over the top of the black pistol he is holding, but might have one at the bottom of that hand..mostly out of sight.
There also appears like there might be some other part of a finger under what should be his index finger on that hand.....
Can't tell what is in his other hand...looks silver and might be a gun.
WAIT!!! Isn't that Butch Cassidy and the Sundance Kid? Something is terribly wrong here....