By the serial number.
A Colt government model .45 with that serial number was made in 1917.
45 ACP
1918.......................
1917
100-500 USD or so
Yes. Post the serial #.
You will need to call Colt to find out.
The Colt model of 1917 revolver just like the Smith and Wesson model of 1917 revolver was made from 1917 until January of 1919,for use in World War I. Another answer: 1918 specifically
Probably nothing, because it is a fake. Check with Gunbroker.com There is no record of the Russians buying the Colt Model 1911 .45, be careful. Is there documentation?
about 1917
Your colt model 1911 commercial (that is what the C stands for ahead of the serial number) was made by colt in 1917.
what is the model ???