This particular revolver is built on a J frame, .32 S&W Long. It is the nickel version, with S&W white plastic grips. Mfg between 1970-1976 when S&W ceased production of this model.
I am new to the forum, but not to S&W guns. My first was a .38 Chief’s special. I’ve had model 19s, 4 and 2 1/2...