My first handgun was a 4in Blue Diamondback when I was ten in 1968. I have a guy trying to tade me one, same vintage, same length, and also royal blue for my Sig Scorpion. It looks cherry. I am going to do it of course if the trade goes thru. I am waiting to hear if he has the original box and papers which would be a fantastic plus! Well, no box or papers. What is this gun worth? Finish is truly about 90%, functions excellent. Standard target stocks....???? Should I?