Helmut Collmann ( 1918 - 1996 ) was a German painter. Helmut Collmann s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 447.28 USD for Sommerblumenstrauß in 2005 to 890.41 USD for Herbstliche Landschaft mit Bäumen in 2007 , based on the size and medium of the artwork.