Bill Ruger was an antique car enthusiast. The Bearcat and Blackhawk were 1920~1930 vintage autos from Stutz, each of which Ruger had in his collection.
The "Super" Blackhawk .44 Magnum differed, originally from the Blackhawk .44 Magnum by having a lowered hammer spur, non-fluted cylinder, 7 1/2" barrel, and protective ribs for the rear sight. Also had an extended grip, wide, grooved trigger, and a deluxe high polish blue. Hence the term "Super" to differentiate it from the .44 Magnum Blackhawk.