Niki de Saint Phalle ( 1930 - 2002 ) was a French painter. Niki de Saint Phalle s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 20066.22 USD for Ohne Titel (Nana pregnant) in 2002 to a remarkable record 645800 USD for NANA DAWN in 2007 , based on the size and medium of the artwork.