Yeah Dunc, I did the same thoughts, I’d find a cheap one to try, but those prices put the Kibosh on that idea.
I’m thinking Fizzy may be wondering if it’s a single inventory Phantom Quad!
No if anything, it was dual inventory.....but it could be a one off. By that I mean similar to Harvest's attempts with both ELO vinyls .
The picture on the Sampler shows a stereo copy , I think.
This could be an album mixed in quad , even encoded , but never released.
Thus my comparison to the 2 first ELO albums .(circa 1973)
Now that being said, it's up for speculation. Why ? Because discogs doesn't have all the releases that were quad....but most , as they rely on public reporting And no one has them all. I'd hazard a guess they don't have everything on the Quadraphonic Discography .