Nice, certainly worth the $65! they are hard to come by, you either find the complete mower or complete tiller but rarely the whole setup. Hopefully it comes with the blade disk, they are special to this setup. Took me ages to find mine. To be 100% you would need the catcher and windrower as well.
Looks basically the same as a normal rover disk, but has a hex drive welded to it to fit over the engine drive boss. Undoes with one bolt. Rover's official advertisement boasted that it could be swapped over in 48 seconds! And that's before the days of rattle guns.