browning b-80 DU value New and improved (pics)

[true north]

A friend of mine was just given, yes given, an unfired Browning B-80 Ducks Unlimited edition 12 gauge in it's DU case.Not being a shotie guy myself I thought I'd ask you guys.
What's this thing worth?

 

[Sharptail]

This gun is the spawn of many nations. Parts made by Beretta (Italy) and finished and assembled at (Belgian) FN´s plant in Portugal. Mfg. 1981-late 1988. Depending on which DU edition (Plains?), amount of engraving, and whether it has Invector chokes or alloy receiver it should bring $550 to $700 in new condition. I am not very good with values, so please take these numbers with a grain of salt.

Sharptail

 

[true north]

Thanks sharptail
I believe he did mention something about "plains". I'll be having a look at it tonight,might even post a pic if it'll help.