I was given some old guns from my grandfather and one of them was a .38. It has a 5 shot cylinder and where the cylinder swings out there is a number 2 printed, below the 2 are the numbers 59459. on one side of the frame, just above the trigger guard is a Smith and Wesson trademark. On the other side of the from the trademark and under the cylinder, right by a screw, 'made in USA Marcas Registradas Smith and Wesson Springfield, mass' is stamped into the frame. The barrel length is 2 inches and on each side of the grip seems to be another s&w trademark in metal. on the metal where the grips connect to the frame, the serial number is 120415. I have had no luck finding what model this is or anything else about it really. would appreciate some help.