A group of 71 sponsor units at the celebrated Apthorp at 390 West End Ave. are being sold to Joseph Sitt for $120 million.
The luxurious, 1908-era full-block building surrounds a central courtyard. It sits between 78th and 79th streets and also borders on Broadway.
The former rental was purchased for $426 million in early 2007 just as the market tanked — leaving its converters pouring money into old mechanicals in a stalled market.
At one point, NY Attorney General Eric Schneiderman halted sales over shady filings.
Later, lenders took over and stabilized the property — and sales picked up.
Two units are in contract for an average of $6.5 million, or $2,365 a square foot, according to StreetEasy. The 173 previous sales averaged $2,710 a square foot.
Sitt is paying $810 per square foot. He could not be reached for comment.
