It has problems. It is not in the condition it was when the armory finished the build. The barrel was replaced in 1903. . . also apparently by the Army as it has military inspector's marks from that era. . . as it is now a 5½" barrel, but 1891 standard barrel would have been 7½". That change detracts from the value somewhat. The wear and tear also has a big effect. The condition is not that good.
The auction estimate is $6000 to $8000.
I always thought that using a Colt Revolver was mythology in western movies. Interesting to read that the butt has numerous dents from using it as a hammer.
The article reminds me of story told long ago about a teen friend’s beater car. Everything was worn out and had to be replaced. His Dad advised, “Son, you’d best overhaul that car by jacking up the radiator cap and driving a new one underneath.”