Johann Wilhelm Hoffnas ( 1727 - 1795 ) was a German painter. Johann Wilhelm Hoffnas s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 225.67 USD for Bildnis eines Herrn in rotem Rock. in 2004 to 1070.87 USD for Porträt eines Edelmannes am Schreibtisch in 2008 , based on the size and medium of the artwork.