Jakob Diezler ( 1789 - 1855 ) was a German painter. Jakob Diezler s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1808.02 USD for Der Rhein vor Burg Rheinfels in 2004 to 12377.85 USD for The Drachenfels and the Rolandsbogen in 2006 , based on the size and medium of the artwork.