Jacob Adriaensz Backer ( 1608 - 1651 ) was a Dutch Golden Age painter. Jacob Adriaensz Backer s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 4870.13 USD for Bileams Esel in 2004 to a remarkable record 306997.96 USD for Portrait of Abraham Velters in 2012 , based on the size and medium of the artwork.