The comments and suggestions to my post have been spot on. I picked the gun up yesterday. I'm very pleased with it. Externally it's a bit tired with worn bluing and scratches etc. on the stock. It looks a like it has had a recent service and shoots really well. I'm not an experienced air-gunner but to me the trigger is as good as a HW100 I've shot on a few occasions.
I think for the next few weeks I'm going to shoot it as much as possible to get a real feel for the gun and then think about the best way forward with refinishing the stock and the bluing. Is cold bluing worth while, I've seen so many mixed feelings on it? Any advice would once again be appreciated. When I've fathomed out how to post a picture I will.
Thanks for all the help,
Mark