A series of works recovered by a World War II-era group known as the Monuments Men is set to go on sale.

The Nazi-looted paintings will go up for auction at Sotheby’s in New York Thursday, in an auction of Old Master sculptures and paintings.

The pieces rescued by the Monuments Men are part of tens of thousands of works the Allies group rescued, in a tale that has been adapted into a film of the same name starring George Clooney. The film opens this month.

Some of the works were in the ownership of the Rothschild family before being seized and placed in the collection of Nazi leader Hermann Goering.

“The scale of looting was absolutely extraordinary,” Lucian Simmons, Sotheby’s head of restitution, told reporters. “In France, for example, 36,000 paintings were stolen from institutions and largely from individuals. The Monuments Men managed to recover and return the majority of those.”