Did Ruger make a "2 screw" Super Blackhawk?

[Fatelvis]

I know "3 screw" Super Blackhawks are the earlier versions, but was there a "2 screw", and if so, was it before or after the 3 screw? Thanks-

 

[iluvG.R.I.T.S]

No.The 3 screw was first.It was replaced with the current 2 "pin" frame.One pin for the trigger and one pin for the hammer.