Well you got a start, but there isn't near enough information to identify what you have. The marking on the side of the barrel, ".38 S&W Ctg." does not have anything to do with the model, it simply identifies what cartridge the gun is supposed to use. They also frequently used the same serial number on different models. So....
Is your revolver a top-break (tip the barrel down to load it), or a hand-ejector (swing the cylinder out to the left to load it)?
Are there patent dates stamped on the top of the barrel? (Or maybe the side). If so, what are the last 3 dates?
Is this a 5 or 6 shot revolver?
How long is the barrel? (Measure from the front face of the cylinder to the end of the muzzle).
Does this revolver have an enclosed hammer and a grip safety bar on the back of the handle? Or does it have a conventional hammer that you can cock with your thumb, and no safety?
Come back with the necessary information and we'll see what we can do.