It is unique. Found on the Marketplace, so these are Marketplace photos.
Looks to be based upon a Dempster gearbox, possibly an Aermotor hub but with 8 wheel arms, and a Hummer wheel? Those are my guesses…
Hybrid
Re: Hybrid
It's a Rube Goldberg design alright. Two blades per section, is that what makes it a Hummer wheel?
Re: Hybrid
I think the metal Hummers were 4 blades per section with the straight band. Guessing the blade sections were then cut in half to allow for the two blade section we see.