Han Jansen ( 1931 - 1994 ) was a Dutch painter. Han Jansen s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 600.87 USD for Twee koeien in 2004 to 3055.3 USD for Landschap bij Irnssum, Friesland in 2012 , based on the size and medium of the artwork.