Otto Grashof ( 1812 - 1876 ) was an Argentine painter. Otto Grashof s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1643.66 USD for Porträt des Diakon Simon Petrowitsch in 2004 to 25643.02 USD for Battle of Schumla in 2013 , based on the size and medium of the artwork.