Walter Kopp ( 1877 - ) is a German painter. Walter Kopp s works have been put up for auction numerous times, with realized prices varying from 68.88 USD for Landskap med å in 2005 to 371.5 USD for Holzbrücke unter Kopfweiden vor einem Dorf in weiter bewölkter Winterlandschaft in 2006 , based on the size and medium of the artwork.