This one shipped December 30, 1938 to Chief C. W. Smith of the Morgantown, WV Police Dept. It shipped with the humpback hammer. It has a lot of holster wear and the grips were obviously replaced later in life.
Picture of Chief C.W. "Clete" Smith, Chief of Police, Morgantown, WV 1922-1948
I wish I could nail this down as his gun, but who knows. Would the Chief order his with a Humpback hammer? Possibly.