2577XX is a 1906 Colt New Army model.
This one is a commercial model.
The barrel should be 4 1/2" when measured from the face of the cylinder to the end of the barrel. It was also offered in a 3" and 6" barrel.
The hard rubber grips are the original type.
The numbers on the small parts are factory assembly numbers used to keep fitted parts together during manufacture.
Assuming the gun is in correct working order and in 95% original condition with original grips, value would be at least $1,150.
Treat the gun very carefully. The action is very complex and is easily broken. Once out of order, no new parts are available and virtually no pistolsmith will even attempt repairs.