Sotheby’s London Cont Eve Highlights February 13, 2013 by Marion Maneker Adrian Ghenie, Dr. Mengele 2 (£30-40k) £121k Alberto Burri, Bianco Cretto (£480-650k) £825k Calder, Untitled £150-200k) £892k El Anatsui, Zebra Crossing 2 (£250-350k) Francis Bacon, Study for Portrait (£1.8-2.5m) £4.52m Hurvin Anderson, Untitled (Welcome Series) (£100-150K) £229k Lucio Fontana, Concetto Spaziale, Attese (£800-1m) £1.44m Robert Ryman, Untitled (£550-750k) £1.22m Sigmar Polke, Menschen Wie Du + Ich (£800-1.2m) £1.665m Tom Wesselmann, Great American Nude No. 5 (£500-700k ) £836k Blinky Palermo, Untitled (£200-300k) £469k FX Lalanne, Moutons (£250-350K) £601k Roman Opalka, 1965:1-∞ (£300-400k) £612k Sigmar Polke, Hotel de Ville, 5 vor 12 (£300-400k) £657k More from Art Market MonitorAd Reinhardt Sale Splits HeirsPier PressureDonor CycleScottish Gallery Director Defends Value of ArtZao Wou-ki Takes the SpotlightBringing Rules to the Chinese Art Market