Edvard Munch's The Scream on show ahead of auction

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Experts are predicting the only privately owned version of Edvard Munch's masterpiece The Scream could fetch $80m (£50m) at auction in New York in May.

The work, which is one of four versions of the painting created in the 1890s, is going on display in London ahead of the sale.

The BBC's David Sillito spoke to Philip Hook from Sotheby's about one of the most famous images in the world.

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