The late African American artist Ed Clark, best known for “push-broom” technique in which he used a household broom as a brush, produced a series of abstract paintings in 1978 that depict his home state of Louisiana. This 5ft by 8ft work is the largest and one of the earliest paintings by Clark to come to auction and was given by the artist to the consignor. “Given its overall quality, scale and history, this piece is poised to capitalise on the recent surge in demand for Clark’s works,” says Samuel Mansour, Phillips’s head of the New Now sales. Christie’s New York set Clark’s auction record last year with Untitled (Paris Series) (1998), which sold for $495,000 (est $200,000-$300,000). Ed Clark, Untitled (Acrylic #1) (1978). New Now, Phillips, New York, 4 March. Estimate: $200,000-$300,000. ©Phillips