A guest on Antiques Roadshow was left in a 'state of shock' after being told how much a poster, that famously hung on the wall during John Lennon and Yoko Ono's bed-in, was actually worth.

It’s an image of John’s head where his face is a vibrant orange ... s dark background. The painting abstractly captures John’s uniqueness. What John Lennon thought about Andy Warhol During ...