Robert Ryman ( 1930 - 2019 ) was an American Minimalism and Conceptual Art painter identified with the movements of monochrome painting, known for abstract, white-on-white paintings. Robert Ryman s works have been put up for auction numerous times, with realized prices greatly surpassing estimated prices, varying from 1304.3 USD for Ohne Titel, pl. 7 (from On the Bowery)¬Ω in 2002 to a remarka