Wolff ( 1857 - 1919 ) was a German painter. Wolff s works have been put up for auction numerous times, with realized prices varying from 213.5 USD for Lächelnder Alter mit Bierseidel in 2005 to 414.28 USD for concert aux avant-postes, pendant le siège de paris in 2005 , based on the size and medium of the artwork.