News that the National Gallery of Australia bought Clifford Possum Tjapaltjarri’s huge painting Warlugulong for $2.4 million has delighted Hank Ebes, the Melbourne Aboriginal art dealer who put the work up for auction – and not only because he collects a tidy $2 million.

For the past decade, Ebes has been deploring the fact that many of Australia’s most important indigenous art works have been going into private collections or sold to overseas buyers.