Home Forums Birds & Dogs Shotguns Browning Semi auto 12g, whats it worth?

All i know is the guy bought it around 15-20 years ago, shot it 7 times and its been sitting in his attic, I have a picture, just curious if anyone can tell the model and if its worth $450 or not.
heres a little info that he inlcuded too:
Model - Field
12 Gauge
30" Barrell
3" Mag Chamber
Grade - I
Choke - Invector



what do you guys think?

-Jordan-

That is a 500G (gas) . There were also the recoil ones. I had a recoil. I felt lucky to have gotten $275. Not too many folks out there that liked them. Magazine spring was too weak in mine.

My several year old blue book says $575 for 100%, and $425 for 95%. Manufactured 1990-1993.

My current Blue Book (30th Ed) gives the exact same pricing for the A500G