A painting sold last year for £3,500 has gone back on the market for £2million after it was revealed by experts to be by celebrated British artist John Constable.
Christie's of London, the auctioneers, thought a fan had painted the study of Salisbury Cathedral in homage to Constable's famous 1831 work and valued it at just £500.
A collector bought it for £3,500 in June 2013 - but, after taking a closer look, suspected the original artwork had been painted over.
