Real LI

Talk about a quick turnaround.

A Southampton house listed for $65 million — which hit the market in January and went into contract a month later — recently closed. When asked about the final selling price, Beate Moore, the Sotheby’s International Realty listing agent, said, “It was a big number, that’s all I can say.” Moore told Newsday in February that she expected the owner to get close to the asking price.

The eight-bedroom, 8.5-bath Gin Lane mansion, which closed last Tuesday, once belonged to film producer Marty Richards and his wife, Mary Lea Johnson, granddaughter of the founder of the Johnson & Johnson Company.

Moore declined to give the identity of the buyer or seller, citing a strict confidentiality agreement. Public records show the seller is listed as 1776 Investments Corp. That corporation is headed by Ivar W. Mitchell, managing director of Andlinger & Co., Inc., a private investment and management firm with offices in the United States and Europe.