Alan Potamkin, the car-dealership titan whose last name has long appeared on Manhattan billboards, has sold a massive estate in Coral Gables, Fla., for $43.7 million.

That sky-high price makes this deal the most expensive sale to close so far this year in Miami-Dade County, notes the Real Deal, which first broke the news.

The 3.6-acre waterfront estate at 1 Casuarina Concourse first came to market in May 2015 for an even higher $67 million, reports the Real Deal; that listing included a 20,862-square-foot mansion as well as an adjacent lot. In 2016, Potamkin and his psychologist wife, Brigitt Rok Potamkin listed the mansion only for $49 million — with an option to buy the lot.

This sale, the Real Deal notes, appears to encompass the entire property — the home and what is a 157,138-square-foot lot with 937 feet of water frontage on Biscayne Bay.

The identity of the buyer, listed as One Casuarina LP, is unknown.

The three-level, Mediterranean-inspired house was built in 2000 and comes with nine bedrooms, 10 full bathrooms and five half-bathrooms. Packed with amenities, it includes separate chef’s and family kitchens, a wine room with space for 1,500 bottles, two built-in saltwater aquariums, an aviary and — for ease of getting around — an elevator.

On the lower level, there’s a full gym, a boxing room, an apartment for guests and a game/billiard room with a kitchenette.

Outside, there’s a private beach, a heated pool and spa, a tennis/basketball court and a dock that can fit boats up to 130 feet long.

Jill Eber and Jill Hertzberg of Coldwell Banker repped this listing.