oh yeah That does look like a swash armature bar (if thats what they are called on rotaries).
Slicksteel - Its for sure a heavy machine in comparison to most rotaries, this thing is like a locomotive. steel or iron. Weighs as much as a typical coil machine. Looks really cool but Im not sold on it because of the long stroke.
I never ran any of my coil machines with such a long stroke so Im not sure what to do with it. Oh well, I'll learn or sell it. Good thing about buying used machines.