Sivert Carlson ( - ) is a Swedish painter. Sivert Carlson s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 69.3 USD for Mosebacke resp "Klubbens Borg, Mälarhöjden" in 2006 to 120.41 USD for Unknown in 2015 , based on the size and medium of the artwork.