Hans Haag Johann Haag; Hans Johann Haag ( 1841 - 1919 ) was an Austrian painter of horse and animal. Hans Haag s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 322.06 USD for A dark brown hunter in a landscape in 2004 to 3806.04 USD for Der Hinterhalt in 2007 , based on the size and medium of the artwork.