1917.
Your Winchester model 1894 was produced by Winchester in 1912.
Your serial number indicates that your Winchester model 1912 shotgun was made in the year 1920.
your Winchester model 12 shotgun was produced in 1915.
1912 is the date of manufacture
1912. DC
1916 year of manufacture is 1916.
The gun was made in 1919.
With the serial number that you provided,your Winchester model 1912 pump action shotgun was made in the year 1941.
date of manufacture is 1915
Winchester Model 12 slide action shotguns were marked as the "Model 1912" from 1912-1919. Godbear Tennessee
1920.
your model 1912 Winchester shotgun was made in 1918.