Gabriel Cornelius Ritter von Max ( 1840 - 1915 ) was a German painter. Gabriel Cornelius Ritter von Max s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 925.24 USD for Betende in 2003 to a remarkable record 30225.18 USD for Gratuliere! in 2012 , based on the size and medium of the artwork.