Call Colt
What model?
Depends on the model and serial number.
Proofhouse.com has Colt sn data.
Proofhouse.com has Colt sn data.
You can find out at Proofhouse.com in the Colt tables.
1922
1978
Need to know what type of Colt to answer.
If your Colt is the 1911 military pistol, it was made in 1915.
Will need model name to answer.
1918