Which model, A5 or Superposed? 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. Condition and age is also a factor. Auto 5's with recoil pads (other than Mag 12's) poly-chokes and compensators will reduce value. Recommend taking it to a gun shop for appraisal. You can also do your own investigation by looking at other models being sold that are in the same condition as yours. Try the gunbroker.com or a periodical called "The Gun List" You can also reference the Blue Book of Gun Values which can be purchased on line at various retailers
90-550 usd
$350-$600.
100-1000 usd
Anywhere from $350-$1400.
Impossible to value without any more information.
100-1000 USD or more depending on specifics.
Depends on condition and originality. $400-$1500.
What is the value of a 12 gauge Browning shotgun serial J68824?
50-500 usd
You need to include a model number with this question to get the correct fiqures.
Value depends on condition, which you don't address. Range could be a few hundred to a few thousand.
Browning.com has a sn function listed under customer service.