Pierre Henri De Valenciennes (after) ( 1750 - 1819 ) was a French painter. Pierre Henri De Valenciennes (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 565.8 USD for An Italianate landscape with classical ruins in 2005 to 18655.45 USD for A view of the castle of Pierrefonds, in ruins, with figures by a river in 2008 , ba