Gudrun Barbara Sibbons ( 1925 - ) is a German painter. Gudrun Barbara Sibbons s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 58.09 USD for River landscape with anglers in 2009 to 577.31 USD for Unloading beached boats at sunset in 2009 , based on the size and medium of the artwork.