Your Browning B-80 in the description you described is valued at 450 dollars.
500 or so
Browning never made a Model 51 shotgun.
AFAIK they never made a bolt action shotgun
No, never
500 USD
I would like to start out with I have never seen a Browning serial number as described by you.Are we sure that you have a Browning 16ga shotgun,or another made shotgun that may have used Browning,s patent?I must admit that I have never seen a straight stocked Browning shotgun or heard of one in my many years of collecting firearms.
The only model that Browning made that comes close to your question is the model B-80.These range in price from 230-300 dollars.As far as my research indicates,Browning never has produced a model 8 shotgun.
Browning never made a .410 automatic shotgun. Autos were made in 12, 16, and 20 guages. They did however make 410's in over/unders. auto5man
All my research indicates that browning never offered the auto-5 shotgun in .410 gauge.
Browning never used the prefix letter B on any of there shotgun,s serial numbers.
Browning never used the letter B prefix for any of there shotguns serial numbers.
If gun is mint and never fired - then you could reasonably expect $1500 - $2000 auto5man