Peter Ackermann ( 1934 - ) is a German painter. Peter Ackermann s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 564.12 USD for O Stadt der Schmerzen in Verzweiflung düsterer Zeit. in 2004 to 2512.2 USD for Die alten Brücken nach Oberkassel in 2009 , based on the size and medium of the artwork.