Selling Condos With Holograms by ROBIN FINN Posted on December 26, 2014 by listallproperties 0 Flares Filament.io 0 Flares × By ROBIN FINN The unlikely centerpiece of Extell Developmentās sales campaign for the 219-unit One Riverside Park is a hologram. Published: December 27, 2014 at 09:00PM from NYT Real Estate http://ift.tt/1EpqRfD via IFTTT