The Cardsharps painting
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Sotheby's sued over 'Caravaggio' painting

28 October 2014 Last updated at 06:08 GMT

A painting sold by Sotheby's in London for £42,000 is at the centre of a legal battle, amid claims it could be the work of Italian baroque master Caravaggio with a much greater value of around £11m.

Former owner Bill Thwaytes, of Penrith in Cumbria said he was told it was a copy - and he sold it at a knock-down price.

Now he says he was misinformed - and he is taking the auction house to court. Tim Allman reports.