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 670 rifle is valued at between 140-200 dollars for a rifle in 60%-90% original condition and a good bore.
your Winchester model 1894,which was made in 1955 is going for between 250-375 dollars depending on amount of original finish and condition.
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.
Your Winchester model 62 was made by Winchester in 1937.As To the value of your Winchester model 62,these are selling for between 130 dollars for a gun with 10% original finish remaining all the way up to 1,000 dollars for a fine specimen in 98% original condition with a mint bore.