With an 82% sell-through, Sotheby's scores with Monet, Schiele, Magritte and Picabia; George Michael tests the YBA market; Phillips new buyer's premium; Bisi Silva, Nigerian curator, dies at 56.

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Sotheby’s London Imp-Mod, Surrealism Evening = £87.7m

Ignore the 22 works offered statistic. There were 22 works offered in the Imp-Mod Evening sale. Another 17 or so were offered during the Surrealism sale. Together the two sales totaled £87.7m. £79.3m was in Impressionist and Modern Art. An additonal £13.9m was sold in the Surrealism auction. Some of the surprise runners were the Magritte, L’Étoile du matin which made £5.3m over a £4.5m high estimate, Picabia’s Atrata which made £3.7m over a £2m high estimate. Egon Schiele’s Triestiner Fischerboot also out-performed dramatically to sell for £10.67m over at £8m high estimate.