HAP Grieshaber ( 1909 - 1981 ) was a German painter. HAP Grieshaber s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 117.43 USD for Ave Maria, 1974 in 2008 to 4091.47 USD for Polnischer Kreuzweg in 2016 , based on the size and medium of the artwork.