Ivan Serpa ( 1923 - 1973 ) was a Brazilian painter. Ivan Serpa s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 19849.52 USD for Untitled No. 12 from the series Amazon in 2011 to 143000 USD for Untitled (Série Amazônica) in 2013 , based on the size and medium of the artwork.