I've got an opportunity to buy a 439 stainless. I haven't seen it yet myself, but a friend said it looked like new. The owner said he is original owner and has box, papers,spent casing, and extra mag. He also claims he has never fired it. Serial numb. starts A804xxx. Did they really make the 439 in stainless? I haven't had time to do much research, but everything i've seen so far has been blued. Approx. what should I pay for this? Sounds like it might be a nice example to have. Thanks in advance for your replies!!!