Johannes Vennekamp ( 1935 - ) is a painter. Johannes Vennekamp s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 16.52 USD for Von Herne nach Karl-Marx-Stadt in 2004 to 220.65 USD for Welch ein Epos ist mein Leben in 2007 , based on the size and medium of the artwork.