Perhaps the most famous and controversial Dada artwork of all was Marcel Duchamp’s Fountain. It consisted only of a urinal set on its back, but it raised a powerful question: “What exactly is worthy to be called art?
While you’re unlikely to make a killing as a toilet salesman unless you’re handling a graffitied Marcel Duchamp urinal, you could be quids in if you happened across the bog utilised by John Lennon between 1969 and 1972 at his Berkshire home. It sold for a staggering £9,500 in 2010 - 10 times the expected price -snapped up by a “private overseas buyer”. Read more at http://www.nme.com/photos/the-weirdest-most-expensive-beatles-