From Real Estate In this week's section: In New York City real estate, closings can literally take on the trappings of a blood sport. A full-floor penthouse at 100 11th Avenue that sold for $19,397,662.50 was the biggest sale of the week, according to city records. The penthouse, which has a 4,500-square-foot terrace, was also the last sponsor unit to sell in the building, which was designed by Jean Nouvel. Holly Parker, a managing director at Prudential Douglas Elliman who oversaw sales at 100 11th Avenue, on the Hudson River, said the actual sale price for the apartment was $19.75 million. She did not know why city records showed a lower number. A 4,675-square-foot four-bedroom on the 23rd floor, the apartment had an asking price of $22 million, and it sparked a three-way bidding war. Ms. Parker said interested parties included a Nigerian buyer who offered well above $20 million. But after several weeks of uncertainty, in which the Nigerian repeatedly promised but failed to wire money for a deposit, the developer moved on to the second-highest bidder, who bought the apartment through a limited liability company. Ms. Parker declined to name the buyer, but said he was not foreign, as the other two bidders were. In addition to generating the highly charged bidding war, the apartment recently received screen time on the Bravo program "Million Dollar Listing New York." Ms. Parker, who appeared briefly on the show, confided that it was a little more fiction than fact. In the episode, in which a party was held in the apartment for brokers and clients, Ms. Parker said, she already had contracts out on the apartment. "They just pretended for the show," she said. It was all make-believe. The building first came to market in 2007, but as with many new developments, sales lagged when the financial crisis hit, and several buyers walked away from hefty deposits when they could not close their deals. In fact, the 23rd-floor penthouse went into contract in 2009, but the buyer backed out and lost a $4.5 million deposit. The listing describes this apartment as "the jewel in the crown that is Jean Nouvel's iconic masterpiece." It has 14-foot-high ceilings, two fireplaces, floor-to-ceiling windows and an enclosed loggia in addition to the roof terrace. With so few high-rise buildings in the area, Ms. Parker said, "you get 360-degree views of Manhattan and the water that are really unbelievably spectacular." Big Ticket includes closed sales from the previous week, ending Wednesday.