Saw this one from a Gil Jesus study---
I have also noticed that the handle on the pistol looks flared [not like the usual .38 Special handle]
I too noticed that the revolver and holster do not appear to be the snub nosed revolver and short holster that Lee Oswald allegedly had in his possession at the time of his arrest. ( He allegedly had the snub nosed S&W on his person and the holster was in his room.) The BY photo, 133A appears to show that the revolver is longer barrel western style "six shooter".... It definitely has flared grips .....
And for FWIW .... Lee would probably have preferred a "Texas Style" six shooter to use in portraying himself as a rough and ready fighter.
FWIW.... Either the photo is authentic and can be used to verify information ....or it's a fake and is worthless for verifying information......
The length of the holster could probably be verified by comparing it with something else in the photo....