Omer Coppens ( 1864 - 1924 ) was a Belgian painter. Omer Coppens s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 61.84 USD for Sans titre in 2005 to 2538.84 USD for The Great Mosque of Kairouan in 2007 , based on the size and medium of the artwork.