Otto Engelhardt Kyffhäuser ( 1884 - 1965 ) was a German painter. Otto Engelhardt Kyffhäuser s works have been put up for auction numerous times, with realized prices varying from 49.27 USD for M√§nnerportr√§ts in 2005 to 238.11 USD for Der Anstich am Hochofen in 2010 , based on the size and medium of the artwork.