Julien’s Auctions is set to auction off a piece of rock ‘n’ roll history next month: John Lennon’s iconic Framus Hootenanny guitar. Featured prominently in the Beatles’ hit songs and the 1965 film Help!, the instrument is estimated to fetch a staggering sum between $600,000 and $800,000. Discovered recently in an attic in the British countryside, the guitar has been authenticated by Beatles historians and is expected to eclipse the current record price for a Beatles guitar.