you did not furnish the serial number......................
made by Colt in 1914 on a contract for the United States marine Corps
You will have to call Colt or provide the serial number.
It tells the year of manufacture of a Colt.
You will have to call Colt
With the serial number that you have provided,your Colt Model 1911 was made by Colt in the year 1918.
if it's the model 1911 military auto........made 1918
The Colt Police Positive Special with that serial number was made in 1936. Police Positive .38 was made in 1911.
Your Colt model of 1911 dates to the year 1918,with the serial number that you have supplied.
You will have to call Colt
made 1918
Proofhouse.com has Colt serial number tables.