Oskar Pletsch ( 1830 - 1888 ) was a German painter. Oskar Pletsch s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 82.91 USD for Wie ist's so still im Stübchen, Wie hält so still mein Liebchen in 2005 to 1500 USD for Portrait of a pensive girl in 2009 , based on the size and medium of the artwork.