Hendrik Valkenburg ( 1826 - 1896 ) was a Dutch painter. Hendrik Valkenburg s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2595.29 USD for DE SPINSTER in 2003 to 10871.72 USD for Apentheater: the circus is coming in 2004 , based on the size and medium of the artwork.