Carl Robert Kummer ( 1810 - 1889 ) was a German painter. Carl Robert Kummer s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 649.35 USD for Das Sarazenentürmchen in 2004 to 10558.07 USD for Südliche Küstenlandschaft in 2005 , based on the size and medium of the artwork.