What do you intend to use the gun for? It's unsuitable for waterfowling because Browning doesn't recommend using steel in the Belgian-made guns. It's too heavy and too tightly choked for upland. The Auto 5 is an oddity on the clay target fields. So to do anything useful with this gun will require some modifications.
It looks in rough shape which isn't surprising because it was stored in a case which is never a good idea. Cracked forearms are fairly common in Auto 5s and they only get worse with use. I'd offer $250 to a friend who was facing hard times and I was feeling charitable. For anyone else I'd let them find another buyer.