There's a 1968 U.S. stereo pressing of The Beatles' so called White Album signed by John, Paul, George and Ringo going to auction. calls the piece "the rarest fully signed Beatles album ever to be auctioned."  Lennon and McCartney signed it in black ink, with Lennon adding the date "Dec 73" and sketching self portraits of himself and Yoko Ono

Ringo Starr and George Harrison both signed in blue ink.  As part of the authentication process, the company found the signatures were from 1973 or '74.

It's said to be worth at least $150,000.  The bidding on this rare piece of rock 'n roll history begins on November 22nd.