Jacob De Gruyter ( 1630 - 1681 ) was a Dutch painter. Jacob De Gruyter s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1844.07 USD for Moored ships on a calm estuary in 2007 to 8268.67 USD for SCHIFFE AN HAFENGEBÄUDEN EINER SÜDLICHEN STADT in 2008 , based on the size and medium of the artwork.