Nine classical artifacts that until recently belonged to the New York philanthropist Shelby White will go on view Saturday at the Palazzo Poli in Rome as part of an exhibition of illicitly excavated antiquities returned to Italy by American museums, dealers and collectors. Among the pieces Ms. White handed over this year after long negotiations are two from the fifth century B.C., a bronze statuette of a nude youth and a calyx-krater attributed to the so-called Eucharides Painter. A 2,500-year-old krater attributed to the Greek master Euphronios will go back to Italy in two years under the agreement Ms. White reached with the Italian Culture Ministry. In a statement issued on Friday by both sides, Ms. White said that her collection had been purchased at public auction from dealers whom she and her husband, Leon Levy, who died in 2003, had "believed to be reputable." She said she had nonetheless concluded, based on Italian government evidence, that "their export from Italy was questionable." The Italian government has never accused Ms. White or Mr. Levy of any wrongdoing, and the joint statement said that Ms. White had "shown great sensitivity and taken the initiative voluntarily to offer to return 10 items." The exhibition at the Palazzo Poli is an expanded version of "Nostoi: Recovered Masterpieces," a show of some 70 pieces recovered mostly from four American museums, which opened in December at the Quirinale, or presidential palace, in Rome.