An Italian government representative is taking possession of them at a ceremony Wednesday. The artifacts are a Pompeii plaster wall painting and a Corinthian vase for mixing water and wine.

They were recovered by immigration and customs officials in June. Both items had been scheduled for auction in New York before they were discovered to have been stolen.

Immigration officials said the vase may have been illegally introduced into the art market by Giacomo Medici (JAH’-kuh-moh MEH’-dih-chee) in 1985. The art dealer was convicted in Rome in 2004 of conspiracy to traffic in antiquities.

The wall painting was reported stolen in Italy in 1997.

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