Andy Warhol

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FILE - In this Thursday, Aug. 18, 1977 file photo, artist Andy Warhol, left, photographs Muhammad Ali, his infant daughter, Hanna, and wife, Veronica, at Ali's training camp in Deer Lake, Pa. (AP Photo)

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ADVANCE FOR USE SUNDAY, FEB. 23, 2014 AND THEREAFTER - FILE - In this Thursday, Aug. 18, 1977 file photo, artist Andy Warhol, left, photographs Muhammad Ali, his infant daughter, Hanna, and wife, Veronica, at Ali's training camp in Deer Lake, Pa. (AP Photo)

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Mary Dowd of Myers Fine Art auction house adjusts an Andy Warhol drawing of Martin Burgoyne Tuesday, Jan. 21, 2014 in St. Petersburg, Fla. Burgoyne was a British-born artist, who was Madonna’s roommate in Manhattan and a key figure in her career before she became famous. He died of AIDS in 1986. His parents are auctioning off a collection that is like a 1980's time capsule. It includes art from Andy Warhol and Keith Haring and pencil drawings for the cover of Madonna's "Burning Up” album, along with several photos of a young Madonna before she became famous. The auction will take place Feb. 9, 2014. (AP Photo/Chris O'Meara)

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Four Andy Warhol portraits of Queen Elizabeth II, purchased by the Royal Collection Trust, will form part of the "Portraits of a Monarch" exhibit opening in November at Windsor Castle outside London. (AP Photo/PA, Andrew Matthews)

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This image released by Christie's in London on Wednesday Feb. 16, 2011 show a self portrait by Andy Warhol. The self portrait has sold for 10.8 million pounds ($17 million) double its pre-sale estimate at a London auction on Wednesday. Christie's says the work had been in a private collection since 1974. It is one of a series of 11 self-portraits Warhol created. (AP Photo/Christie's, Ho) EDITORIAL USE ONLY NO ARCHIVE

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This large-scale Andy Warhol self-portrait, previously unknown to the wider public, and made available by Christie's auction house in London Tuesday Jan. 11, 2011, will be among the highlights of the auctioneer's contemporary art sale next month. The six foot square (half a square meter large) red-and-white painting is one of a well-known series of self-portraits executed by the Pop Art master in 1967. Christie's said Tuesday that five of the 11 works in the series are already in museums. The present work has been hidden away in a private collection since 1974 and is expected to fetch up to 5 million pounds ($7.75 million) when it goes on sale in London on Feb. 16. Warhol died in 1987 but remains one of the world's most expensive artists. The painting will go on public view in New York from Jan. 22 to Jan. 26. (AP Photo/Christie's Images) FOR ONE TIME USE ONLY IN CONNECTION WITH PREVIEW OR REVIEW OF THE RELEVANT AUCTION SALE: EDITORIAL USE ONLY: NO SALES: NO ARCHIVE:

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This image provided by the New York Police Dept. shows a set of eight signed Warhol prints in various colors called "Camouflage." Police are looking for the person who tunneled through a wall into a New York City apartment while the owner was away around Thanksgiving 2010 and made off with hundreds of thousands of dollars worth of artworks by Andy Warhol and other notable artists. (AP Photo/New York Police Dept.)