Fredrik Kolsto ( 1860 - 1945 ) was a Norwegian painter. Fredrik Kolsto s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3699.09 USD for Opunder fjeldet in 2002 to 26571.66 USD for Ung kvinne ved vinduet 1893 in 2008 , based on the size and medium of the artwork.