First post here. I am a long gun enthusiast but have never owned a handgun. My wife decided we needed a handgun for personal protection and I really really hated to by another gun but I found the wherewithall after hearing my wife say I NEEDED to go buy another gun and I went out looking for something we could both handle and would handle anything we needed to shoot. I can handle my own when shopping for a rifle or shotgun but don't know much about handguns. I'm a southpaw and most guns are made wronghanded. I knew I wanted a revolver and found a S&W 13-2 with a 4" barrel (that's measuring from the front of the cylinder to the muzzle end of the barrel) and from reading some of the previous threads I got a pretty good deal on it. I brought home some .38 shells and let my wife shoot it, and she loved it, so I dragged myself back to the fellows house who owned the gun and paid him for it. Now my questions are, and please forgive the elementary school knowledge of handguns. What info do I need to supply for you folks to tell me when the gun was made? And in looking at S&W pistols, what the heck does J, K, L, etc... frame mean? And any other info on this gun would be appreciated. Thanks