Western Field/Browning?

[Gordon]

I came across a wierd old gun in fine condition Marked "Westernfield-Browning" . This is possibly a model 80?The locking bolt comes thru the roof of reciever and the pump handle gets bumped forward then back. I think this was an otherwise unused Browning shotgun design. Who made it? It has that 20-30's look of fine machineing and wood finish and checkering , it is original to butt plate an is $150 . Should I buy it , what is the story with this strange semi humped back gun?

 

[Gordon]

OK after research I came to conclusion that this is a variation (semi humped back) of the Steven's 520 shotgun . Apparently Western Field marketed it in1920's as a model 30 But as I said this one has a ridge on top of reciever not a complete square back. It is a 1902 Browning pattern , some say his best pump shotgun as Stevens used it for Military contracts in WW1 & WW2! Think it is a good collector piece or a POS for $150?