She led the way into a large living room, with unobstructed light pouring through tall windows on three sides. The room was centered on a carved limestone fireplace, and the ceilings were very high.

“Where did the furniture come from?” Laurence asked.

“All the upholstered pieces and the fabrics are from Ralph Lauren. The wood furniture is from the manufacturer, Baker. The piano, a seven-foot grand, is from Steinway. The pictures are from a number of galleries. All the things are purchasable, not included in the asking price.”

“I see. Thank you.”

Laurence sat down at the piano and played some chords and scales, then he inspected the interior of the instrument. “Good,” he said.

They moved into a dining room, where a table was set for twelve. “The chairs are from Lauren, the table and sideboard from Baker, the china is Wedgwood, from about 1935, the crystal and the chandelier are Baccarat, and the sterling pieces are from a shop down the street that deals in old silver. There is another, more intimate dining room near the kitchen.” She led the way through a service door into a large kitchen. “Most of it is original to the apartment,” she said, “except, of course, the appliances, which are from Viking. The small dining room is here, with views to the south, and seats six or eight. Again, chairs, Lauren, table, Baker.” They went down a hallway. “There is a servant’s apartment here, and a second bedroom, here, and an office nearer the living room. The furniture for those is from Bloomingdale’s, as are the rugs throughout the apartment, which are among the finest the store has to offer.”

“Thank you.”

“One other thing—there is a small, two-bedroom, two-bath apartment on the floor below, which is offered separately for three million, and furnished with refinished hotel furniture. It would be ideal for older children or staff. Would you like to see it?”

“Yes, thank you,” Laurence said.

She pressed a panel near the elevator, which opened, revealing a staircase, and led them down. Laurence and Stone had a look around.

“Thank you. May we see the bedrooms upstairs now, please?”

They went back to the living room and up a floor in an elevator tucked behind a broad stairway. “Master suite is here,” she said, opening double doors. “There are his and her bathrooms and dressing rooms. The woman’s is twice the size of the man’s.” She showed them three guest rooms down the hallway, each with a large bathroom, then led them back down the stairs. “And now, the pièce de résistance, the library.”