Friedrich Johann Voltz ( 1817 - 1886 ) was a German painter. Friedrich Johann Voltz s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2478.8 USD for LANDSKAP MED F√ÖR in 2004 to 45956.54 USD for Herd of cows at a stream. in 2008 , based on the size and medium of the artwork.