Georg Koppmann ( 1842 - 1909 ) was a German painter. Georg Koppmann s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1016.78 USD for Schmiedeeisernes Häuschen für transparente Affichen und Zeitungsverkauf, erbaut 1872 in 2004 to 2376.61 USD for Zur Erinnerung an Braunschweig in 2008 , based on the size and medium of the artwork