Your Winchester model 50 semi-auto shotgun will be valued between 250-400 dollars for a shotgun showing between 60%-90% of its original finish and a good bore.If it is a trap or skeet model,then the value will be between 500-800 dollars.If it is a feather weight shotgun denoted by the letter A before the serial number,you may add another 50 dollars to the above stated prices.You may also add 100 dollars for a vent rib barrel(Simmons installed).
Your winchester model 50 semi-auto shotgun was made by winchester in 1956.
Your Winchester model 1400 semi-auto shotgun is valued at between 140-220 dollars,depending on overall condition and a good bore.
your winchester model 100 semi-auto rifle was made by winchester in 1962.
A Winchester Model 140 12 gauge, semi automatic can be worth up to $150. The exact amount that the Winchester is worth depends on the condition of the gun.
With the serial number that you have supplied;your Winchester model 50 semi-auto shotgun was made in the year 1957.
As much as 350.00 us , depending on the overall condition of course.
your Winchester model 100 semi-auto was made in 1965.
Your Winchester model 1400 semi auto shotgun is gas operated.
the Winchester model 100 semi-auto rifle was made between 1961-1975.
50-200 usd
With the serial number that you have supplied;your Winchester model 100 semi-auto rifle was made in the year 1963.
That's the Winchester Model 490. A very high quality .22 semi-auto with the weight and feel of a Model 100. Built during 1976-1980. Pricey and hard to find.