Hans Richter ( 1888 - 1976 ) was an American painter. Hans Richter s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3714.98 USD for Senza titolo in 2004 to 15579.38 USD for Ni Main ni Pied, 1956 in 2007 , based on the size and medium of the artwork.