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.
$350-$650.
Impossible to answer without knowing which model.
100-1000 or more depending on specifics
90-550 usd
100-400 or so
Impossible to answer without knowing which model and its condition.
$350-$600.
Impossible to value without any more information.
Anywhere from $350-$1400.
100-1000 usd
50-250 usd
Browning Auto-5 'Light Twenty' made in 1967. Value from $450-$1000.