Can't answer without model name. Go to proofhouse.com and look it up.
You can find out at Proofhouse.com in the Colt tables.
Go to: www. proofhouse.com with serial number.
1918
You will have to call Colt to find out.
1934 for the Colt 1903 hammerless .32.
Made in 1916, if 1903 hammerless .32
COLT GOVT MODEL M1911A1 U.S. ARMY- MFG BY REMINGTON RAND IN SYRACUSE NY -
What model?
Depends on the model and serial number.
Proofhouse.com has Colt sn data.
You will have to call Colt since you did not provide the serial number.
The date of manufacture is determined by the Colt model type and serial number. See: www.proofhouse.com/colt/index.html