Note that the Prime-line one has round-over sides and an apparently slightly smaller knob than the Ives, Stan. There’s no assurance the screwholes will line up if you order the wrong one, and the “pin” on the Ives is square; the other is rounded, which may not fit the mortise keeper/pocket the same unless you change that too. The one in our coach is like the Ives, and looks just like your photo. Just sayin’.
Joel