Kunstverlag Franz Hanfstaengl ( - ) is a painter. Kunstverlag Franz Hanfstaengl s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 339.67 USD for Wilhelm II, Prince of Oranien, by Van Dyck in 2007 to 1193.98 USD for Frau Merk in 2010 , based on the size and medium of the artwork.