Aart Johannes Cock ( 1905 - 1981 ) was a Dutch painter. Aart Johannes Cock s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 403.83 USD for Sitting at the beach under the tree in 2005 to 625.39 USD for Processie te Bali in 2006 , based on the size and medium of the artwork.