Impossible to answer without a serial number, maker and detailed description.
Cornell Publications might have a book with that information.
1965.
1988.
Impossible to answer without a serial number
about 1951
Rifle or pistol?
1978.
And what model is it? sales@countrygunsmith.net
No published sn data
that would be a 1974 model
Mid 1970's.
check the butt of your Colt. The serial # does not look right ????