Karl Schlageter ( 1894 - 1990 ) was a Swedish painter. Karl Schlageter s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 740.31 USD for Schweizer Gebirgssee in 2004 to 1561.61 USD for Weiblicher Akt mit Gebirgssee im Hintergrund in 2011 , based on the size and medium of the artwork.