The question can't be answered without a serial number. You can call Colt with the serial number and they will tell you.
1957
1972
No
1970
Proofhouse.com has Colt sn data.
You must call Colt to find out.
You will have to call Colt with the sn to find out.
made 1976
Proofhouse.com has Colt sn data.
Proofhouse.com has Colt serial number tables.
Call Colt and they will tell you.
Your colt was made in 1916.