Robert Nanteuil (after) ( 1623 - 1678 ) was a French painter. Robert Nanteuil (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 63.12 USD for CHAMPAIGNE JEAN-BAPTISTE COLBERT in 2008 to 3557.07 USD for Portrait of a gentleman in 2013 , based on the size and medium of the artwork.