Frants Alekseevich Rubo ( 1856 - 1928 ) was a Russian painter. Frants Alekseevich Rubo s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1226.87 USD for A study of trees; A Russian soldier in 2006 to 29314.86 USD for The assault in 2007 , based on the size and medium of the artwork.