Paul Keller Reutlingen ( 1854 - 1920 ) was a German painter. Paul Keller Reutlingen s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 4468.28 USD for Woods inside with a flock of sheep. in 2004 to 25000 USD for A Girl in a Field of Poppies in 2011 , based on the size and medium of the artwork.