Francois Kollar ( 1904 - 1979 ) was a French painter. Francois Kollar s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 4080 USD for SMOKE STACKS in 2004 to 27500 USD for Double-impression of the Eiffel Tower in 2015 , based on the size and medium of the artwork.