Bonhams to offer the first collaboration between Keith Haring and Jean-Michel Basquiat Keith Haring & Jean-Michel Basquiat, Untitled, 1980. Ink on paper (estimate: $300,000 500,000). Photo: Bonhams. NEW YORK, NY .- On May 12, Bonhams sale of Post-War & Contemporary Art in New York will offer Untitled (1980) by Keith Haring (1958-90) and Jean-Michel Basquiat (1960-88), the first collaboration between the two artists to ever appear at auction, and one of the only works created by these two giants of contemporary art together (estimate: $300,000-500,000). Untitled comes directly from the collection of Samantha McEwen, who lived on Broome Street, New York City, with Keith Haring and his partner Juan DuBose from 1980 to 1983. This work on paper is an incredibly rare, visual conversation between Basquiat and Haring, and only a small handful of works by this pair are in existence. Untitled was recently exhibited in Keith Haring | Jean-Michel Basquiat: Crossing Lines, at Melbournes National Gallery of Victoria: an unprecedented exhibition that included upwards of two hundred works by the two artists, which was developed with the support of the family of Jean-Michel Basquiat and the Keith Haring Foundation. Untitled was considered critical to the exhibition by Dr. Dieter Buchhart, art historian and curator of the exhibition.