Heinz Flockenhaus ( 1858 - 1921 ) was a German painter. Heinz Flockenhaus s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1623.38 USD for Gewitterstimmung über weiter Niederrheinlandschaft in 2004 to 1800 USD for WINTER SUNSET in 2006 , based on the size and medium of the artwork.