Lars Boethius ( 1903 - 1968 ) was a Swedish painter. Lars Boethius s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 848.29 USD for Blommor i växthus in 2004 to 6979.64 USD for Karlberg Castle in winter dress in 2011 , based on the size and medium of the artwork.