What is a marble game getter 22 and 410 over and under gun worth?

Good news, bad news. The Marble Gamegetter is a sought after collector's item, and depending on EXACT condition and model, may sell for anywhere from several hundred to more than $1000.

Now the bad news. Many of these were made with 12 inch or 15 inch barrels. Under US law, these are Class III weapons, just like a belt fed machinegun. IF the barrels are less than 18 inches in length, they must have been registered with the Federal BATFE as an AOW (Any Other Weapon). If they have not been registered already, they cannot be. Penalty for possession of an unregistered AOW is 10 years in prison.

So- registered (and yes, there will be registration paperwork) a valuable firearm.

Unregistered- major legal problem, no real value.