Gerti Bierenbroodspot ( 1940 - ) is a Dutch painter. Gerti Bierenbroodspot s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 689.99 USD for Study for dancing figures in 2004 to 1295.52 USD for Arcangeli in 2009 , based on the size and medium of the artwork.