Jacob Philippe Hackert (after) ( 1737 - 1807 ) was a German painter. Jacob Philippe Hackert (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 4700 USD for An Extensive Rocky Wooded Landscape with Two Figures by a Tree Stump in the foreground in 2004 to 10182.66 USD for Landscape with goats in 2007 , based on the size and