It was an online opinion, so we don't know for sure if it's the same one they looked at. I'm not comfortable with the Prince autograph. I don't know the other names.
They have a great reputation. I don't know anything about the symbol signature either, though.
I really don't see them going down in Price any time soon, it's really amazing how much there selling for, as much as Lennon, Hendrix etc.
Looks good Bjarne.
You can see the forgers copying this style because it's easier to forge.