IAmSinistar: Yes, given the sleeve (and the Sony) logo, it seems to be more like a prototypical
MO disc or something similar. I just went for the biggest disc in the image search results. I do recall seeing a Nashua 8" floppy in my computing days though, and my first inclination was that it was a joke product, like some kind of promotional item. But all too real, it turned out.
I'm sure a lot of floppies are fairly unreadable now. They weren't the greatest for bit redundancy. I backed up all my PC & Amiga floppies to hard drive ages ago, in the days when PCs still came with floppy readers.
You know, I never truly understood how a storage could be Magneto-optical, either it was magnetic or optical, but not a combination of both.
The CRV disc was basically a write-once laserdisc in a caddy.