It sounds like to me that you have the Winchester model 1200 police stainless model.The serial number just means the number assigned to your shotgun during the time of production,nothing more.The Winchester model 1200 series shotguns were produced from 1964-1981.The serial number was mandated by the goverment with the passage of the gun control act of 1968.
Well, actually the Winchester Stainless Marine is worth about $450.00 in fair condition. I currently own one myself and have been doing the research and have attended numerous gun shows here in San Antonio. Hold onto that Winchester! They are going up in value by the day...
That will depend on the Model of shotgun you are asking about,along with the overall condition of your Winchester shotgun?
Your winchester model 12 shotgun was made by winchester in 1953.
Your winchester model 12 shotgun was made by winchester in 1937.
Your Winchester model 1897 shotgun was made by Winchester in 1910.
Your winchester model 24 shotgun was made by winchester in 1947.
Winchester did not make a shotgun chambered in 25 gauge,as a matter of fact there has never been a 25 gauge shotgun made.Available chamberings were 12 gauge,16 gauge,20 gauge,28 gauge,and 410 gauge.
Winchester
The Winchester Model 12 16 gauge shotgun, with serial number 1779186, was made in 1918. This is according to the information released by Winchester.
Your winchester model 12 shotgun was made by winchester in 1953.
your Winchester model 12 shotgun was made in 1953.