Sonia Delaunay ( 1885 - 1979 ) was a French Orphism abstract art painter. Sonia Delaunay s works have been put up for auction numerous times, with realized prices greatly surpassing estimated prices, varying from 3626.47 USD for Ohne Titel in 2002 to a remarkable record 902500 USD for Portrait de Charles de Rochefort in 2010 , based on the size and medium of the artwork.