500-1000 USD
A Winchester model 20 shotgun in good condition(80%) original condition is valued at between 350-450 dollars.
You will have to pay 3,000 dollars or more for a original Winchester model 1873 lever action Winchester rifle in the condition you described.
Your Winchester model 1890,which was made in 1911,is currently going for between 250 dollars in 10% original condition ,up to 1,000 dollars for one in 85% original condition.
$80-$150 in great condition
I am assuming you have a standard grade Winchester model 12 shotgun?With that being the case your model 12 in mint condition(90%) original condition should be worth 475-500 dollars.
Yes, a well maintained 1961 Winchester 20 gauge model 12 pump shotgun is in good condition.
Your 1937 produced Winchester model 62 is going for between 130 dollars with 10% of the original finish up to 475 dollars for one retaining 90% of the original condition.
your Winchester model 1894,which was made in 1955 is going for between 250-375 dollars depending on amount of original finish and condition.
Your winchester model 670 rifle is valued at between 140-200 dollars for a rifle in 60%-90% original condition and a good bore.
A Winchester model 71 can range in value between 650 dollars for a gun with 10% of its original finish remaining,up to 1,500 dollars for a gun with 80% of its original finish remaining.
Your winchester model 12 shotgun was made by winchester in 1929.A 20ga model 12 shotgun in 90% original condition is currently valued at 675 dollars.
It is worth 895 dollars,in the condition that you describe.