Attributed to Richard Diebenkorn, American, 1922 to 1993, watercolor on paper painting depicting an abstract composition. Signed lower right. Framed. Richard Diebenkorn is known for Bay Area figurative and abstract expressionist painting. Born in Portland, Oregon, Richard Diebenkorn became a key figure in the Bay Area San Francisco, Oakland figurative and abstract school of painting. Collectible Abstract Expressionist American Fine Art, Abstract Oil Paintings, and Collectibles.