It’s a D frame like a Detective Special I believe or Diamondback. I have a 77 PP that’s a great shooter. Maybe change out the grips, but I know less about them than I do my wife!Order a Colt 1923 Police Positive with four inch barrel in .38 N.P. (.38 S&W) caliber.
Received it yesterday and was surprised how small it is. Almost child sized.