Thyssen

For example, he says, after the lab finally hammered out an excavation contract with Thyssen Mining, months passed before DOE approved it.

“We got talking, and the Thyssen Museum was immensely receptive to this,” Thyssen-Bornemisza said.

During World War II, the Nazis nationalized the Thyssen steelworks, and many family members fled Germany or tried to.

But she promised: “We will do the right thing by Birgit Thyssen.”

None of the works on the list are on display at the museum that is part of Madrid's "Golden Triangle of art" along with the Reina Sofia and Thyssen galleries.