Ferdinand Karl Grether ( 1886 - 1945 ) was a German painter. Ferdinand Karl Grether s works have been put up for auction numerous times, with realized prices varying from 125.45 USD for Bewaldete Berglandschaft mit Bretterzaun in 2005 to 150.01 USD for Sommerblumen in der Vase in 2007 , based on the size and medium of the artwork.