I have two questions:
1. What's the story behind the 10 MOP circles. Are they plugs from a previous control layout?
2. What doesn't Phil own this bass anymore...or does he?
Regarding question #1- quoting Rick Turner, who was working on this bass back in 2014...
"I'm not even going to try to duplicate all of the micro-processor pickup assignment switching that was touch switch operated on the original setup. That was all the white circles on the bass side of the face." I would assume George Gruhn owns the bass now, though I don't know that to be so, or how it came to pass if true. If you look back through the Showcase Thread on Mission Control, there's a lot of information there, a lot of which points back to the Grateful Dead movie.
Mystique surrounds that instrument... those who know the most don't tend to say much.