Willem Maris ( 1844 - 1910 ) was a Dutch painter. Willem Maris s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 310.67 USD for COWS IN A LANDSCAPE ( A SKETCH ON THE REVERSE in 2003 to 50000 USD for Pasture in Sunshine in 2014 , based on the size and medium of the artwork.