The "plug" is just a stick slipped inside the magazine to limit the amount of space, but there's a big long spring in magazine too, so be VERY careful when you take the cap off the muzzle end of the magazine tube or stuff's going to go flying. (and save the stick, you may want to put it back some day)
A 16gauge model 12 shotgun is valued at between 275-475 dollars,for a gun with between 60%-90% of its original finish remaining and a good bore.
Best left to a gunsmith
Winchester did not make a model 96 shotgun,they did make a model 97 shotgun however.
Best left to a trained gunsmith.
your winchester model 1200 shotgun has a pump action.
Your winchester model 12 shotgun was made by winchester in 1947.
Your winchester model 12 shotgun was made by winchester in 1922.
your winchester model 12 pump shotgun was produced by winchester in 1942.
your Winchester model 12 shotgun was made by Winchester in 1959.
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 1927.That makes your shotgun 84 years old.