Lilly Cassirer gave up her Pissarro to the Nazis for an exit visa in 1939, and her heirs' suit against Spain's Thyssen museum went to decision in October 2026

Camille Pissarro painted Rue Saint-Honoré, Afternoon, Effect of Rain in 1897. Lilly Cassirer owned it in Berlin. In 1939, to get an exit visa to England, where her grandson Claude had gone, she gave it to the Nazis. After the war she was declared the rightful owner. In 1958, not knowing where the painting was, she accepted compensation from West Germany worth about $250,000 in today's money. Baron Hans Heinrich Thyssen-Bornemisza bought the painting in New York in 1976. In 1993 he sold it to the Thyssen-Bornemisza Collection Foundation, an entity Spain created and controls, and it hangs in Madrid. Claude learned where it was in 1999. Informal efforts failed, and the family sued the foundation in California in 2005. On 21 April 2022 the US Supreme Court ruled 9-0 that the court must use the same choice-of-law rule as in a suit against a private party. In January 2024 the Ninth Circuit applied Spanish law and held that the foundation had gained title by prescription. Claude's son David argued that a new California law requires California law in such claims. On 10 March 2025 the Supreme Court vacated the Ninth Circuit ruling. On 26 October 2026 the district court cancelled oral argument and took cross-motions for summary judgment under submission. The painting is still in Madrid.