John Lennon's famous Bed Peace sign displayed during his 1969 anti-war protest with wife Yoko Ono is expected to fetch $160,000 (£100,000) when it goes up for auction later this month (Nov11).
The Beatles legend and Ono staged two "bed-in for peace" events at hotels in Amsterdam, Holland, and Montreal, Canada to promote their anti-war message while on honeymoon.
During the Montreal protest - at which they also recorded their anthem Give Peace a Chance - the couple placed two signs above the bed in their suite, stating "Bed Peace" and "Hair Peace".
When the bed-in ended, a soundman took the Bed Peace sign - and now it's due to go on sale at Christie's auction house in London on 15 November (11).
The handwritten poster is signed and dated by Lennon and Ono, and includes cartoon images of themselves drawn by Lennon.
A Christie's spokesman says, "This sign is emblematic of that period of time and the event. The wording was outlined and then coloured in with black felt tip. It really is an iconic item, and collectors would love to own it.
"Both John and Yoko have signed and dated it, and John has added a caricature of them both. John and Yoko produced many artworks during the event but this was kept prominently above the bed. It was taken by a member of a film crew who gave it to a friend, and it has been in that Canadian family ever since."