Jan Thomas Van Yperen (after) ( 1617 - 1678 ) was an Austrian painter. Jan Thomas Van Yperen (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1661.13 USD for Portrait of Emperor Leopold I (1640-1705) with the crown of the Holy Roman Empire of the German Nation in 2006 to 2434.9 USD for The Infant Bacchus with putti in 200