Augustus Kollner (attributed To) ( 1813 - 1900 ) was an American painter. Augustus Kollner (attributed To) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2600 USD for Collection of 15 watercolor cow portraits in 2004 to 3750 USD for PORTRAIT OF GENERAL WILLIAM T. SHERMAN ON HIS HORSE in 2009 , based on the size and medium of th