Constance Penstone ( 1865 - 1963 ) was a South African painter. Constance Penstone s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 36.7 USD for South African flower seller in 2006 to 224.8 USD for Woman walking along gravel road below mountains in 2011 , based on the size and medium of the artwork.