An anonymous U.S. collector has bought Claude Monet's 1905 "Nympheas" for $43.8 million at a New York auction, Christie's said.

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The Wall Street Journal reported the work from Monet's water-lilies series was sold by the Hackley School in Tarrytown, N.Y., which received the painting as a donation from the family of the late investment banker Herb Allen.

The work was sold Wednesday as part of Christie's Impressionist and modern art sale.