Can't be answered without the serial number.
To determine the year of manufacture for a Colt 1911 .45 based on its serial number, you'll need to reference Colt's serial number charts. The Colt 1911 was produced from 1911 onward, and the serial numbers were assigned sequentially. For example, serial numbers starting with "C" typically indicate a production year in the 1940s. For a precise year, consult a detailed Colt serial number lookup or Colt's records.
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.
You will have to call Colt
It tells the year of manufacture of a Colt.
if it's the model 1911 military auto........made 1918
With the serial number that you have provided,your Colt Model 1911 was made by Colt in the year 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
Proofhouse.com has Colt serial number tables.