Gerhard Richter, Abstraktes Bild (1992), sold for $8.86m (GBP6.68m), more than the low estimate at Sotheby's in London on October 15.
Helen Frankenthaler, November (1980), sold for $1.7m (GBP1.28m), more than the low estimate at Sotheby's in London on October 15.
Michael Andrews, Butterfly Fish (1978), sold for $934,500, more than eight and a half times the low estimate at Sotheby's, London. Pastel on paper, 19.0 x 21.0cm. The work has not been traded before.
David Hockney, Henry Reading (1985), sold for $3.74m, more than the low estimate at Sotheby's, London. Collage, acrylic, contact paper, charcoal on gatorboard in artist's frame, 243.9 x 146.1cm. The work has been traded once in the past.
Michelangelo Pistoletto, Autoritratto (1962), sold for $713,700 (GBP537,600), less than the low estimate at Sotheby's in London on October 15.
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