Grateful Dead- Sotheby's Auction

Nearly 350 items including a bunch of their McIntosh amps up for auction-
No doubt this band was cutting edge for its time, regarding the sound their live shows produced, and the recording from them.
July 1969, temporarily staying at Treasure Island.  A fellow offered me a hit of Grace Slick's Yellow Sunshine for 2 bucks.  It was a batch of Owsley's, never saw anything like it again.  The Summer of Love, 1967, lasted for about 2 years, then meth came in and we see the results to this day.
I suspect much of what is on offer has been blasted to death. Unless it’s signed by the members of the band most of it is useless and not worth bragging about…

AG.  🇦🇺
Yeah Yeah Yeah!

There's a Beatles auction too, at Bonhams LA.
Beatles memorabilia is by far the most collected.
I guess after them it's Dylan probably.
Used to be Elvis.