depending on condition, from $150 to $275. extra mags, scope mount and a scope may add a bit over the bare rifle price.
They may no longer be in production, but I've seen quite a few Savage 24C 22LR/20Ga for sale. Run between $500 to mid $600.
The gun is not really designed to hold a scope. The barrel has no way of holding a scope rail. You would have to drill holes in the barrel to mount one. a pistol scope would also be required and it would out cost the price of the gun many times over. a regular rifle scope would not work. So I suggest that this not be attempted. But it's your pistol.
Either the barrel or receiver would have to be drilled and tapped or some form of barrel clamp would be required to hold the scope. At this point, given that the rifle is over 75 years old and no longer manufactured (read: parts are not available off the shelf and manufacture of same is expensive and difficult), your best choice would be to not do it.
The Savage Arms model 58 16 gage bolt action shotgun is valued at $150 in good condition. It is valued at $50 in fair condition.
Most people have trouble mounting scopes. 1. Mount the rear scope base ring on the rifle first. Just the bottom half. Make it tight 2. Mount the front bottom half of the scope ring next. Use the scope to align the fit to your eve. Do not mount the top of the scope rings in this step. 3. with the scope adjusted to your eye mount the top of the scope rings but not real tight just snug. Look through the scope to make sure the cross-hairs are aligned with the barrel. 4. with an Allen wrench or screwdriver tighten down the rings using a crossover pattern. (left rear screw. front right screw. right rear screw. left front screw) a little at a time until tight. ) Now do the same to the other scope ring. Do not over tighten and strip out the screw holes. 5. most people try to put the rings on the scope first then try to put in on the rifle. This never works it will always come loose. The scope ring bases have to be mounted on the rifle first, then the scope comes last. your next step is aligning the scope to your target but you didn't ask about that so I'll leave that for another question
Contact Remington.
I have two answers for you. Crosman air gun owns both Benjamin and Sheridan air guns. See the link below for the date of manufacture. ( not all dates are there) See the second link for the scope mounts. Hint: you may find that the scope is too far forward when you mount it because the loading port is in the way of the mount. I placed both mounts on the front tube of the scope so I could get it back far enough for my eye relief. Both rings are on the mounts in front of the loading port so the scope extends back over the loading port. Both scope rings are attached to the front tube of the scope.
No such model made by Savage.
The value of a 1940's savage 22/20 over and under?
Absolutely. If it is truly a collector's grade, sell it and buy a cheaper one with an excellent barrel--you'll have enough money left over to have the gunsmithing work done and to pay for the scope.
The Savage model 444B over under shotgun was made from 1969-1972.