Agnes Martin ( 1912 - 2004 ) was an American painter, one of the leading practitioners of Abstract Expressionism in the 20th century. Agnes Martin s works have been put up for auction numerous times, with realized prices greatly surpassing estimated prices, varying from 6250 USD for Paintings and Drawings 1974-1990 (suite of 10), 1991. in 2017 to a remarkable record 3946000 USD for Untitled #1 i