I used to own an old plexi Marshall that was apparently used by Lindsay Buckingham on the Rumours tour.
I have Mark's AB foot switch.. With COA.. But i bought it because I needed one, I really didn't care who owned it.. And it was a good price..No, but a celebrity has my gear.
Mark Tremonti stole my amp! J/k! But he did want one in a rush from the same small builder that I had ordered from. So the builder sent mark mine and compensated me with a bunch of kick ass schwag, only a couple days more in waiting and a bitchin story about it. And the builder is a friend of mine, so I didn't mind at all. I believe the next 3 serial numbers after mine went to some fairly famous people too.