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Podcast: Audiostories
Episode: Would you be willing to spend half a million dollars for an invisible work of art? – ETX Studio
Description: There's a saying that everything has a price. Sotheby's is counting on  this with the sale, on April 6, of "Zone de sensibilité picturale  immatérielle Série n°1, Zone n°02" by Yves Klein. The lot consists of a  receipt confirming the transfer of ownership of an invisible work by the  post-war French artist.