Superposed shotguns are very collectable when in top condition. Values have a wide range due to so many variations and grades of the Superposed and other Browning Over/Unders. Value is too difficult to be accurate without seeing the gun. Condition which includes the amount of original finish and original configuration will determine value. Recommend taking it to a gun shop for appraisal.
Under trigger
It depends on condition and the triggers. If in pristine condition and a single trigger, it could be worth $650-$750 dollars. If a double trigger model and in "just OK" shape $300-$350 would be more in line. Note: add 10% for a 16 gauge gun.
We'd have to start by figuring out what make and model it is. What markings are on the gun? sales@countrygunsmith.net
About $400.
This model of Savage was made from 1967-1989.If your Savage has the under lever opening in front of the trigger Guard,then it was made from 1980-1989.If not then from 1967-1979.
Browning.com has sn data under customer service.
It depends on the model, condition, accessories, box, papers, gauge, barrel length, choke(s), etc..
No such model designation.
Browning.com has a sn function listed under customer service.
The current value of an ithica gauge over under with vented rib barrel and auto injectors is $1200.
Around $350-$400, a little more if it is the single-trigger version.
500