ART SHOW: As chairman and chief executive officer of Saks Fifth Avenue in the Eighties, the late Mel Jacobs was often in the public’s eye. But there was a side to him and his wife Rosalind that the couple kept quiet — their love of art, particularly surrealism. “Mel and I were so involved with Man Ray, William and Norma Copley, Marcel Duchamp, Lee Miller, Max Ernst. They all became great pals in our quiet private lives,” said Rosalind. The Pace-MacGill Gallery, 32 East 57th Street, now has an exhibit of 32 pieces from the couple’s collection of surrealist art including photos, sculptures, drawings and paintings. The centerpiece of the collection is Man Ray’s 1924 Violin d’Ingres. “They’re not large pieces. They are intimate pieces only bought from close friends of ours,” Rosalind said. “They’re not for sale. I wouldn’t have dreamed of taking them off our living-room walls, except that Peter MacGill really wanted to show them.” Rosalind married Mel in 1957. He died in 1993.