It seems to me that it was built from opportunistic parts that is to say any parts and it could be built from other parts as long as the theory is the same.
It seems that the stator is missing, I guess it is made from the same opportunistic magnets as the rotor.
It seems that the stator used cam followers since the top arches look like a cam.
A cam would be needed to keep the oscillating stator magnets in sync.
There would be several sets of stacked oscillating stator magnets as in the rotor.
In the crotch of the stacked stator magnets could be a pivot axle with an arm linkage on top with a roller touching the cam.
The rotor should have a gear to hook up a chain to a generator to produce power.
