Charles François Eustache ( 1820 - 1870 ) was a French painter. Charles François Eustache s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 4688 USD for THE "TILSITT" IN DRY DOCK in 2011 to 7500 USD for A VIEW OF A BOATYARD in 2011 , based on the size and medium of the artwork.