Mary Frances Pratt ( 1935 - ) is a Canadian painter. Mary Frances Pratt s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 920.35 USD for PEACHES IN A PLASTIC POT in 2004 to 54292.81 USD for Yellow Pear on a Yellow Plate in 2014 , based on the size and medium of the artwork.