John Heartfield ( 1891 - 1968 ) was a German painter. John Heartfield s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 139.64 USD for Fotomontagen in 2004 to 9000 USD for MORD AN UNSERN BR√úDERN IM OSTEN! in 2010 , based on the size and medium of the artwork.