I was told that the model 631 is rather a rare bird. I happen to have a 4" model 631 w/adjustable sights that I bought new and is still in excellent condition. No, I don't want to sell it, but the guy said that only 190 model 631 .32 Mg revolvers were made. Really I doubt it, but I just thought that one (or more) of you fellers would know the skinny on this. Thoughts?