RE: need answer on hun by tommrow plzz
It's probably a MOdel 173 or 183. They're not overly valuable. I've seen them around here before, and in excellent shape they'll get $135-165.
Check the model #, but I believe this is the gun you are talking about. It could be a Mossberg Westernfield...If so, it could be worth about $100 MORE than the other.
Just depends on which model it is. I've not seen one with adjustable chokes on it...