Sonja Delaunay terk ( 1885 - 1979 ) was a French painter. Sonja Delaunay terk s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1125.09 USD for Komposition in 2010 to 5000 USD for Rythmes-Couleurs in 2017 , based on the size and medium of the artwork.