Gunter Grassmann ( 1900 - 1993 ) was a German painter. Gunter Grassmann s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 4.13 USD for Stilleben mit Lauch und Äpfeln in 2006 to 793.46 USD for Tiberinsel in 2006 , based on the size and medium of the artwork.