Never heard of a book called that.
Blue Book of Gun Values, Browing web site or call Browning.
Best left to a gunsmith
very high
50-10000 USD depending on specifics.
100-2000 usd
50-500 usd
Impossible to answer without a detailed description.
Try Blue Book of Gun Values.
Blue Book of Gun Values.
Blue Book of Gun Values has a description.
There is no record in Fjestad Blue book of FN making a pump shotgun. lcj
less than a hundred to multiple thousands depending on specifics