Yngve Bäck ( 1904 - 1990 ) was a Finnish painter. Yngve Bäck s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 287.97 USD for UNTITLED in 2005 to 884.35 USD for Sunbathing on the Deck in 2008 , based on the size and medium of the artwork.