Jef Verheyen ( 1932 - 1984 ) was a Belgian painter. Jef Verheyen s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 15345.66 USD for Spectra/Venetiana/aqua/et luce in 2004 to 289500 USD for Untitled in 2014 , based on the size and medium of the artwork.