Valentin Aleksandrovich Serov ( 1865 - 1911 ) was a Russian Art Nouveau, Impressionism painter, known for Realist portrait and moderist landscape painting. Valentin Aleksandrovich Serov s works have been put up for auction numerous times, with realized prices greatly surpassing estimated prices, varying from 9398.1 USD for Study of a horse in 2004 to a remarkable record 9266500 USD for Portrait