Robert Hammerstiel ( 1933 - ) is a painter. Robert Hammerstiel s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3509 USD for Vor der Dämmerung in 2003 to 6686.28 USD for U-Bahngang mit Bettler und Hund in 2017 , based on the size and medium of the artwork.