My research indicates that your colt government model was made for the U.S. navy in 1913.Does there indicate any government property markings on the frame? If you could indicate what is written on the slide I may be better able to identify your colt.
That Colt model 1911 was a commercial model, not a government model and based on the serial number, it was made in 1947.
The Colt 1911 government model with that serial number was made in 1919,
The government model with that serial number was made by Colt in 1944.
Proofhouse.com has Colt sn data
Colt model 1911 .45 commercial with that serial number was made about 1966.
A Colt government model .45 with that serial number was made in 1917.
Colt data at Proofhouse.com
You must call Colt
You will need to call Colt.
Colt will provide a historical letter for a fee.
That Colt .45 government model was made in 1918.
A Colt government model with that serial number was made in 1918.