Elna Fonnesbech Sandberg ( 1892 - 1994 ) was a Danish painter. Elna Fonnesbech Sandberg s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 318.77 USD for Trylle III in 2006 to 1752.6 USD for La Lune in 2018 , based on the size and medium of the artwork.