Franz Krüger (after) ( 1797 - 1857 ) was a French painter. Franz Krüger (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2112.68 USD for PORTRAIT OF EMPEROR NICHOLAS I PAVLOVICH (1825-55) in 2004 to 24616.65 USD for Portrait of Empress Alexandra Feodorovna, n√©e Princess Charlotte of Prussia (1798-1860), wife of Emperor N