The building’s owner, Singapore-based OUE Ltd. is selling the property for $430 million. That’s up from the nearly $368 million the company paid for it in 2013. When news broke last year that the tower would be sold, experts projected it could fetch $700 million. And OUE’s annual report last year valued the property at $650 million. The buyer for the deal, which has not yet closed, is New York-based Silverstein Properties Inc.