Going by the picture, I would say that it is an FIE SB-1 in .410. If it is in like new condition, I would say go for it at $80 to $120. I have had one of them for the last 24 years, and it still gets regular use during small game seasons. It was my first shotgun, anf the only way it will leave my collection is if my daughter wants it. It will not beleaving my family anytime soon.
I have to agree with the other members who sugest offering $80 to $100 bucks. It never hurts to try.
If I have to explain why I ride, you wouldn't understand. Explaining sex to an alien would be easier than explaining the feeling, one that boils all that is going on in your life down to what really matters each time you are in The Wind. All I can say is, Life is not Life without it.