On November 11 in New York, Sotheby's sells Number 21, 1951, a painting in red, brown, black and orange, lot 17.
This oil on canvas 242 x 163 cm is one of the last from the time when Rothko was still working at home. The orange and red areas are lavishly shaded at the top and bottom of the image. The darker center that grows up to the top at the edges is enclosing the spread of the glow.
In the following year, Rothko finally settles in a real artist's studio. He can then indulge more freely in his quest of the sublime. He becomes more demanding, especially on the lighting conditions in the exhibitions that should participate in subduing the viewer. His trend is now toward larger canvas with a further minimalism of the colored rectangles.