Check the receiver and barrel area.
Imposable to answer without you providing a serial number to your Winchester model 12 shotgun.
With the serial number that you provided,your winchester model 12 shotgun was made by winchester in 1927.
With the serial number that you have supplied,your Winchester model 12 shotgun was made in the year 1916.Your serial number indicates that it was made by Winchester in 1916.
Your serial number indicates that your Winchester model 12 shotgun was made in the year 1919.
Your serial number indicates that your Winchester model 12 shotgun was made in the year 1925.
Your Winchester model 12 shotgun was made in the year 1940 with the serial number that you have provided.
your Winchester model 12 was made in 1913.
Your winchester model 12 shotgun was produced by winchester in 1947.
With the serial number that you have provided,your Winchester model 12 shotgun was made in the year 1956.
Your serial number indicates that your Winchester model 12 shotgun was made in the year 1951.
with the serial number that you provided,your winchester model 1912 shotgun was made by winchester in 1930.
Your Winchester model 12 shotgun was made in the year 1925,with the serial number that you have provided.