With the serial number that you provided,your Winchester model 1912 pump action shotgun was produced in the year 1950.
with the serial number that you provided,your Winchester model 12 shotgun was produced in the year 1935.
With the serial number that you have provided,your Winchester model 12 pump action shotgun was produced in the year 1955.
With the serial number that you provided,your Winchester model 12 pump action shotgun was produced in the year 1928.
It sounds as if you have a Ithaca Crass model shotgun,that was produced in the year 1903 by your serial number.
Your serial number indicates that your Winchester model 12 shotgun was made in the year 1914.
With the serial number that you provided,your Winchester model 12 pump action shotgun was produced in 1942.It was one of 50,871 made that year.
With the serial number that you provided,your Winchester model 1912 pump action shotgun was produced in the year 1955.
A model 37 with the serial # 10464 was produced in 1939.
1954
1964-81
1959
It was made in 1949.