Adolf Hengeler ( 1863 - 1927 ) was a German painter. Adolf Hengeler s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 555.14 USD for Der Gratulant in 2003 to 6033.18 USD for Die Schöne beim Bade in 2005 , based on the size and medium of the artwork.