Cornelis Koppenol ( 1865 - 1946 ) was a Dutch painter. Cornelis Koppenol s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2284.24 USD for A PICNIC IN THE DUNES in 2003 to 4778.59 USD for Two children with geese in a polder landscape in 2006 , based on the size and medium of the artwork.