John Sennhauser ( 1907 - 1978 ) was an American painter. John Sennhauser s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 200 USD for AMORPHOUS TRANSPARENCIES in 2004 to 80000 USD for ARCHITECTURAL PAINTING NO. 1 - GREEN CIRCLE in 2017 , based on the size and medium of the artwork.