Check the date code on the Remington Society of America here:
http://remingtonsociety.com/rsa/questions/barrelcodes
Your serial number indicates that your model 1897 pump action shotgun was made in the year 1907.
No sn provided = no answer
with the serial number that you provided,your Winchester model 1897 pump action shotgun was produced in the year 1902.
With the serial number that you have provided,your Winchester model 1890 pump action .22cal rifle was made in the year 1919.
With the serial number that you have provided,your Winchester model 1912 pump action shotgun was made in the year 1956.
With the serial number that you have provided,your Winchester model 1912 pump action shotgun was made in the year 1923.
With the serial number that you have provided,your Winchester model 1912 pump action shotgun was made in the year 1923.
With the serial number that you supplied,your Winchester model 1912,pump action shotgun was made in the year 1959.
With the serial number that you have supplied,your Winchester model 1906 was made in the year 1911.
With the serial number that you have provided,your Winchester model 1890 pump action .22cal rifle was made in the year 1913.
With the serial number that you have provided,your Winchester model 12 pump action shotgun was made in the year 1926.
With the serial number that you have provided,your Winchester model 1890 pump action .22cal rifle was made in the year 1927.