1930's
The Winchester Model 37 was produced from 1936 until 1963, with the "Steelbilt" designation introduced in the late 1940s. To determine the specific age of an individual Model 37, you would need to check its serial number, as that will indicate the year it was manufactured. If your shotgun is a Steelbilt model, it could be anywhere from about 70 to 80 years old, depending on the exact year of production.
Fair condition $450 and excellent $1000
your winchester model 12 shotgun was made in 1940,that makes it 71 years old.
Your Winchester model 12 shotgun was produced in 1938.
your model 12 Winchester shotgun was made in 1914.
Your winchester model 12 shotgun was made in 1928.
your Winchester model 12 shotgun was made in 1949.
Your winchester model 12 shotgun was produced by winchester in 1947.
Your Model 12 is a 1940.
your Winchester model 12 pump shotgun was made in 1936.
your model 12 Winchester shotgun was made in 1929.
Your Winchester model 12 shotgun was made in the year 1940 with the serial number that you have provided.