 The French government's duplex unit was sold in June 2014 for $70 million, reportedly $22 million over the asking price – a bidding war involving three prospective buyers escalated the eventual selling price.The buyer was hedge fund billionaire Israel Englander, who already lived in the unit directly above, and surpassed a record set just days earlier by Egypt's richest man, Nassef Sawiris, for a penthouse unit on nearby Fifth Avenue.In 2005, author Michael Gross published a detailed book on the building and its history, "".