It took an epic back-and-forth with the Landmarks Preservation Commission, but Jared Kushner finally got approval for his Puck Building penthouse project in late 2011. Since then details of the creatively named Puck Penthouses have been scant—about design, pricing, potential buyers, or anything else—and the bare-bones teaser site doesn’t help. Then yesterday the Post reported that Leonardo DiCaprio had been one of the first to scope out the units, which are going to be priced above $20 million a pop whenever they hit the market. And now a tipster has sent us this Knight Frank listing with the first three interior glimpses of the six 3-4BR apartments, which will range from 4,895 to 7,000 square feet and have “soaring barrel vault brick ceilings, cast-iron columns, and oversize windows.” Above, a living room, dining room and terrace.