Sotheby's, Mayfair, London, November 7th 2014. Several outstanding examples of Czech avant-garde art from the Roy and Mary Cullen collection are to be auctioned by Sotheby's on November 12th. PICTURED: A Sotheby's worker adjust the hanging of an untitled collage by Styrsky, which is expected to fetch up to £120,000 at auction.
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