Andy Warhol & Pietro Psaier ( 1928 - 1987 ) was an American painter. Andy Warhol & Pietro Psaier s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 479.87 USD for 'Cover Up In Dallas', proof studio edition with 1975 certificate in 2006 to 4439.18 USD for Senza titolo in 2007 , based on the size and medium of the artwork.