Although we thought back in October that there was only one penthouse remaining in crazy Jenga tower 56 Leonard, it turns out that there were a couple that hadn't been released yet. Reps sent word today that the building's final penthouse, no. 52A, is set to be put on the market for $18.75 million. The 3,658-square-foot apartment, which includes 510 square feet of exterior space, could be combined with one of the other two unclaimed penthouses in the building, the neighboring no. 52B (listed for $16.5 million), to create an enormous 7,367 square foot pad. That unit would rival 56 Leonard's 7,799-square-foot penthouse, which is in contract for $47 million.