A pair of Russian billionaires facing foreclosure added their 5,000-square-foot spread at the Plaza Hotel to their selloff spree.  A holding company linked to Valery and Olga Kogan sold Unit 1007/1009 at 1 Central Park South, or 768 Fifth Avenue, to an anonymous buyer for $21 million, according to property records. That’s about 45 percent […]

This article originally appeared on The Real Deal. Click here to read the full story.