LONDON, ENGLAND - FEBRUARY 02: A woman in Christie's auction house admires a painting by Pablo Picasso entitled "Femme au fauteuil" and a Pende Mask from the Democratic Republic of Congo on February ... more 

LONDON, ENGLAND - FEBRUARY 02: A woman in Christie's auction house admires a painting by Pablo Picasso entitled "Femme au fauteuil" and a Pende Mask from the Democratic Republic of Congo on February 2, 2012 in London, England. The painting, which is estimated to fetch 6 million GBP, and the mask are being auctioned in Christie's forthcoming sale 'Living with Art' which will take place on February 9, 2012 and February 10, 2012. (Photo by Oli Scarff/Getty Images) less