No older than 1897, but we need more information to get you a date. Post the serial number.
Your winchester model 1897 shotgun was made by winchester in 1905.
your Winchester model 1897 shotgun was made in 1916.
your Winchester model 1897 shotgun was made in 1910.
Your winchester model 1897 shotgun was made by winchester in 1954.
My records indicate that your Winchester model 1897 was made by Winchester in 1901.
Your serial number indicates that your Winchester model 1897 shotgun was made in the year 1903.
your Winchester model 1897 shotgun was made in 1914 with the serial number that you provided.
Your Winchester model 1897 shotgun was made by Winchester in 1942.
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 have provided,your Winchester model 1897 pump action shotgun was made in the year 1922.
With the serial number that you have supplied,your Winchester model 1897 pump action shotgun was made in the year 1910.
With the serial number that you have supplied;your Winchester model 1897 pump action shotgun was made in the year 1914.