Re: Appraisal request: 1901 Colt DA .38 w/holster
The gun is a U.S. Army Model 1901 revolver, one model of a series that included the Models 1892, 1894, 1896, 1901 and 1903. There were also Navy contract models as well as a variation made for the U.S.M.C., the Model 1905. They were all made for the .38 Long Colt cartridge, although the Model 1903 and the Model 1905 were also made to accept .38 Special. Alongside military production, there was also civilian production, in both the .38 Long Colt and the .41 Colt.
RAC is Rinaldo A. Carr, the Army inspector at Colt; HEK is Henry E. Kelsey, an inspector at the Rock Island Army leather shop.
I notice that the trigger is not in the forward position, indicating that the trigger return spring is broken or that there is something else wrong internally.
In the condition shown, I expect the gun would bring around $250, less if the trigger spring is broken or missing.
I don't have a value on the holster, although they are uncommon today.