David Hockney painting 'California' expected to fetch up to $20 million

Featuring Hockney’s well-known pool motif, the painting has not seen in public for more than 40 years.

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David Hockney painting not seen for 40 years to sell for millions at Christie's auction in London

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Early David Hockney pool painting 'California' headed for auction

David Hockney painting California poised to sell for millions

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