Hans Gerdes ( 1906 - 1979 ) was a German painter. Hans Gerdes s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 87.36 USD for Adam und Eva am Baum der Erkenntnis in 2006 to 634.16 USD for Hl. Christopherus in 2008 , based on the size and medium of the artwork.