1200,1300,1400,1500
All of their semi-auto shotguns are gas operated, yes/ All of their semi-auto shotguns are gas operated, yes/ All of their semi-auto shotguns are gas operated, yes/ Not true. The Remington 11, 11-48, & 48 are all blow back operated. The 58, 878, 1100, and 11-87 are gas operated. All of there current models are.
Your winchester model 50 semi-auto shotgun was made by winchester in 1956.
The Sears Ted Williams Model 300, semi-auto, shotguns were made by Winchester. The Sears 300 is the same as the Winchester Model 1400.
The Winchester model 1400 Mark II was only produced during the years 1968-1972.That is the time frame of your shotguns manufacture.
I won't swear that there aren't any, but a quick look through several of my best reference books shows NO auto-loading shotguns made by Stevens.
winchester sxp
With the serial number that you have supplied;your Winchester model 50 semi-auto shotgun was made in the year 1957.
Your Winchester model 1400 semi auto shotgun is gas operated.
your winchester model 100 semi-auto rifle was made by winchester in 1962.
Please include the model of Winchester semi-auto shotgun you have so that along with the serial number I may give you the correct year of production.
50-200 usd
Depending on condition, about $125