Karl Hackstock ( 1855 - 1919 ) was an Austrian painter. Karl Hackstock s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 297.39 USD for Gamin debout fumant, les mains dans les poches in 2005 to 1459.85 USD for Viennese Winemaker in 2014 , based on the size and medium of the artwork.