A SCOTUS art fraud case with WWI roots, not WW2...
The Rosenbergs were not victims. In 1921, one of the brothers curated the state sale of seized art belonging to German collectors in Paris, of whom Kahnweiler - a Picasso dealer. They sent masterpieces to NYC to their partner Wildenstein. The Wildenstein Institute was found in possession of masterpieces a few years ago, whose provenance they could not substantiate:
https://www.artlyst.com/news/wildenstein-scandal-the-end-of-the-road/#:~:text=The%20Wildenstein%20Institute%20a%20non,carted%20off%20by%20the%20police.
https://www.pbs.org/newshour/arts/listen-live-supreme-court-to-decide-whether-nazi-art-case-stays-in-u-s-court
Heirs to Jewish art dealers say their ancestors were forced to sell the Guelph Treasure to agents of Herman Goering, Hitler's second-in-comm