François Joseph Juste Sieurac ( 1781 - 1832 ) was a French painter. François Joseph Juste Sieurac s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 630.81 USD for Portrait d'homme √† la redingote de velours in 2008 to 1203.46 USD for Portrait d‚Äôhomme en habit in 2013 , based on the size and medium of the artwork.