Gun shop
Your Winchester model 59 in the stated mint condition will bring between 450-525 dollars on todays market.
Your winchester model 12 is valued at between 450-800 dollars depending on the amount of original finish remaining.
I have seen the priced $450 - $525.
This is a .177 pellet rifle.
in good condition, anywhere from $450-$600.
A Winchester model 20 shotgun in good condition(80%) original condition is valued at between 350-450 dollars.
The price of your winchester,new in the box is 425-450 dollars.
Any good qualified gunsmith should be able to repair your winchester,as long as he could obtain the parts required to repair your firearm.
You actually have a Winchester model 9422M.These will bring between 450-550 dollars for a rifle in the condition you describe.They are becoming quite collectable.
Between about $450-800 depending on condition and markings.
A Winchester model 70 rifle produced in 1968 will bring between 300-450 dollars depending on the overall condition of your rifle,and a good bore.
your Winchester model 1897 which was made in 1956,is selling for between 300-450 dollars depending on the amount of original finish remaining on the wood and metal.