Not so fast: I poked around and discovered a few annoying things.
1. it's not 120 OLN spacing but more like 110, which makes it impossible for me to use. even if I swapped in a longer axle and spacers and re-dished, the sprocket would never line up for a usable chainline...and can't be altered AFAIK.
(screwed! )
2. liffted off the dustcap and the HUB BEARINGS are right under it. They are NOT in the hub body but part of this strange FW/cassette assembly, and very outboard which would be a good thing IF this wheel was usable.
So I'm thinking it's some strange BMX animal which helps explain why I've never seen one...do BMX use a narrow-spaced rear? (narrower than 120?)