Sigfrid Södergren ( 1920 - 2000 ) was a Swedish painter. Sigfrid Södergren s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 47.13 USD for Alvastra kloster in 2007 to 191.13 USD for park i vinter in 2011 , based on the size and medium of the artwork.