April 1940.
With the serial number that you provided,your Winchester model 1897 pump action shotgun was made by Winchester in 1924.
with the serial number that you provided,your Winchester model 1897 pump action shotgun was produced in the year 1902.
Your winchester model 12 shotgun was made by winchester in 1947.
Your Winchester model 1897 was produced in 1915.
with the serial number that you provided,your Winchester model 1897 pump action shotgun was produced in 1910.
With the serial number that you have supplied,your Winchester model 12 pump action shotgun was made in the year 1948.
With the serial number that you supplied,your Winchester model 1912 pump action shotgun was produced by Winchester in the year 1923.
your winchester model 12 pump shotgun was produced by winchester in 1942.
Your Winchester model 1912 pump action shotgun was made by Winchester in 1917,with the serial number provided.
With the serial number that you have supplied,your Winchester model 12 pump action shotgun was made in the year 1948.
With the serial number that you have supplied,your Winchester model 1897 pump action shotgun was made in the year 1925.
With the serial number that you supplied,your Winchester model 1912,pump action shotgun was made in 1961.