Keld Helmer Petersen ( 1920 - 2013 ) was a Danish painter. Keld Helmer Petersen s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 781.69 USD for Fence & Bridge Pattern I in 2011 to 1242.36 USD for Untitled in 2018 , based on the size and medium of the artwork.