You have to state whether it is a handgun, rifle, or shotgun and then whether it is a bolt action, semi-automatic, single action, double action or pump action.
Go to Colt's website and request a manual.
Best to ask a gunsmith for assistance.
You really need the services of a good gunsmith
1927
about 1927
1927.
1927-1969
1927
Made in 1927.
1927
1911, and remodled in 1927
about 1927