"Number 5, 1948", 1948
Private sale, 2006. Seller: David Geffen. Buyer: Unknown (rumoured to be Mexican businessman David Martinez)
Right now, this stunning "drip" by Jackson Pollock is the most expensive painting ever sold, though the exact price was never confirmed (but the price displayed here is generally accepted to be true). The exorbitant sum demonstrates not only the strenght of the Art market, but also the increasing interest for the contemporary works of Art.
Original source: by G. Fernández - theartwolf.com