COLOGNE.- A particularly broad scope of nude photography is represented in this auction with outstanding examples of this genre from artists such as Helmut Newton, Heinz Hajek-Halke, Erwin Blumenfeld and Harry Callahan, from Ruth Bernhard, Edmund Kesting, Bill Brandt, Herb Ritts and Jeanloup Sieff. Helmut Newton’s “Lisa Lyon at Home, Venice, California” from 1981 is valued at 6/8.000 (lot 860). Heinz Hajek-Halke’s untitled black and white double nude of 1930-1936 is set at 8/10.000 (lot 727). Two examples are from Erwin Blumenfeld: a solarisation from 1943 is valued at 5/6.000, and from the following year, “Nude on Coca Cola Chair” taxed at 4.000 (lots 783/784). Harry Callahan is represented by four nude motifs from the 1940s and 1950s (lots 785-788, up to 4.000). Umbo (Otto Umbehr) is represented by four portraits. The photographer, who in the 1920s revolutionised and strongly influenced portrait photography with his new style, lost his complete archive of negatives and positiv