All else being equal, yes.
Your winchester model 24 shotgun was made by winchester in 1947.
Parts for an American Gun Company shotgun will only be found as part of another shotgun. Haunt the local gunshows for one that is being parted-out. As for the gauge (not caliber), did you mean "bigger than a 410"? There have been 24, 28, and 32 gauge shotguns made. Of these, only the 28 is still available in the US, but I believe 32 gauge shells may still be commercially loaded in Europe.
A Savage model 24 -3030- 12 gauge in good condition is valued at $500. It is a rifle over shotgun combo.
10-500 usd
If you are referring to the over and under gun that has a .22 caliber rifle on top, and the .410 gauge shotgun on the bottom, it's a Model 24; the one I have is made by Stevens.
I know where there is one. It is in NICE condition. Where are you located?
Depending on condition 300-1000 USD.
Impossible to answer.
By the specific serial number stamped into the frame.
Can't be answered without knowing who made it and the serial number. Even then, the data might not be available.
It very much depends upon what gauge gun it is (e.g. 12-gauge, 16-gauge, or 20 gauge), the barrel length, the choke configuration, and most importantly the graded condition (which can not be deteremined without a visual inspection).