A Corinthian helmet and marble statue of Aphrodite are among 30 artifacts repatriated by the United States to Greece during a ceremony on December 15.

The antiquities—which also include breastplates, a Byzantine silver plate, and a bronze chariot attachment—were recovered by Homeland Security Investigations, the investigative arm of the U.S. Department of Homeland Security, with the office of Manhattan District Attorney Alvin Bragg.

Collectively, the pieces are valued at $3.7 million. Bragg said in a statement that 19 of the pieces were voluntarily surrendered by New York gallery owner Michael Ward and three were seized from British art dealer Robin Symes.

A source familiar with the case said that the remaining eight items are in the possession of investigators, who know that the items were stolen, but have not yet specified where, how, or by whom they were stolen or recovered from.

“A nation’s cherished history should never be pilfered, peddled, or marketed for sale, yet for years these antiquities were kept in collectors’ homes, prestigious institutions, and even storage lockers,” said Erin Keegan, the HSI acting special agent in charge in New York.

“Cultural heritage is an integral part of our identity as people and nations. It is therefore essential and nowadays crucial to protect and preserve cultural heritage for future generations,” Greek Culture Minister Lina Mendoni said in a statement.

Ambassador Dinos Konstantinou, the consul general of Greece in New York, called the artifacts “fabulous” and “stunningly preserved.”

“Their monetary value amounts to millions of dollars but their actual value goes far beyond that,” Konstantinou said. “They are priceless for the Greek people.”

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