You will need to check with Colt Customer Service.
Would need the serial number to answer.
Look on the receiver
It is 40 years old, made in 1970.
About 1919.
1917
1917 for the Colt model 1908 hammerless .25
It was made in 1970. About 39 years ago.
made about 1966
about 1948
That Colt model 1911 was a commercial model, not a government model and based on the serial number, it was made in 1947.
That Colt was made in 1943 by Remington Rand under cotract to Colt Mfg. Co.
You will have to call Colt to find out. SN data published does not cover it.