Manfredo Massironi ( 1937 - 2011 ) was an Italian painter. Manfredo Massironi s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3081.82 USD for SFERA NEGATIVA (1965) in 2005 to 7313.15 USD for Struttura trasparente in 2013 , based on the size and medium of the artwork.