I just joined the forum yesterday, and I have tried using the search but no luck. Maybe I'm not doing it right, so right now I'll just ask the memebers. I would like some information on the model 648, like what years were they made, are they any good, what are they worth. I bought one from a friend a few years ago, he didn't save the box or any of the papers (whished he had). It has a six inch barrel and Smith & Wesson finger groove grips. Overall I would rated it about 95%. I don't shot this gun near enough, I should though it seems to be the most accurate revolver I have. Any help will be appreciated.