A set of celebrity portraits by Andy Warhol on sale at Sotheby’s New York in the upcoming weeks may earn as much as $57 million, Bloomberg reports.  The works include images of Liz Taylor, Brigitte Bardot, Jackie Onassis Kennedy and more.  “Warhol has international appeal,†says Suzanne Gyorgy, head of art advisory and finance at Citi Private Bank. “That kind of art is in a league of its own.â€
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