Fritz Erler ( 1868 - 1940 ) was a German painter. Fritz Erler s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3619.91 USD for Rote Mondnacht in 2005 to 33547.15 USD for Dame mit Panther. Um 1912 in 2009 , based on the size and medium of the artwork.