Wilhelm Gentz ( 1822 - 1890 ) was a German painter. Wilhelm Gentz s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 6093.1 USD for Oriental landscape with a resting herdsman. in 2004 to 36000 USD for Crowds Gathering before the Tombs of the Caliphs, Cairo in 2007 , based on the size and medium of the artwork.