My dad has a TC Contender pistol with the 10in 44mag barrel on it.He's had this gun for as long as I can remember,and im 25..I'd say he's had it for 20 years or so,so its not a newer one.And the funny things is,i've never seen him shoot it..He bought it used,so it does have a few dings on the forearm..What would it be worth? Any idea?