"There's no such thing as a right of pillage," Dowd said. "Reparation has nothing to do with this case."
Who gets it is up to New York's Court of Appeals, where the seven judges grilled both lawyers Tuesday. A ruling is expected next month.
The 9.5-gram (.34-ounce) tablet was excavated a century ago by German archaeologists from the Ishtar Temple in what is now northern Iraq. It went on display in Berlin in 1934, was put in storage as the war began and later disappeared.
"It could fit in the palm of your hand," said Hannah Flamenbaum. "We played with it as children."
Her father met her mother, another Holocaust survivor, at a relocation camp after the war. By his accounts he traded cigarettes or a salami for it. The couple came to the U.S., where her father went to work for a Manhattan liquor store and later bought the store, settling in Brooklyn, raising three children and later moving to Long Island, she said.
"He never tried to sell it. ... This was sort of the legacy of his suffering in the camps," she said. "The thought was if we're allowed to retain it, put it on display in one of the museums, whether down here in Battery Park City in Manhattan or even in Israel. Use it as a way to talk about the Holocaust ... and my parents' story."
According to court documents, the tablet dates to 1243 to 1207 B.C., the reign of King Tukulti-Ninurta I of Assyria. Placed in the foundation of the temple of a fertility goddess, its 21 lines call on those who find the temple to honor the king's name.
The tablet was excavated by German archaeologists from about 1908 to 1914 in what was then the Ottoman Empire, with Germany giving half the found antiquities to Istanbul, Raymond Dowd, the museum's lawyer, said. The modern state of Iraq has declined to claim it, he said.
In 1945, the Berlin museum's premises were overrun, with many items taken by Russia, others by German troops and some pilfered by people who took shelter in the museum, Dowd said. The museum director was not in a position to say who took it, only that it disappeared.
One recent estimate put its value at $10 million, Schlesinger said.
Lower courts in New York were split on the decision, leading to the latest appeal.