Norton Simon Museum countersues to block renewed claim to looted Cranachs

The Norton Simon Museum in Pasadena, California, has countersued to block a renewed claim for the return of paintings by Cranach looted during the Nazi era.

The countersuit, reported on 16 October 2026, answers a new action brought by Jewish heirs and their representatives, according to ARTnews. It seeks a court ruling that the museum holds clear title. That ruling would stop the latest attempt to recover the works.

The latest claim was filed in Los Angeles County Superior Court by the Jewish Federation, acting as assignees of von Saher, meaning a party given the legal rights to pursue another person's claim. The Federation brought the case under a California law passed in 2024 that addresses recovery of art looted during the Holocaust, according to Courthouse News. The filing is one of two lawsuits lodged in California in September staking claims to Nazi-looted paintings, according to The Guardian.

The dispute over the Cranach paintings has run for decades, according to Ocula. Courts have previously upheld the Norton Simon's title to the paintings at issue, according to The New York Times. That earlier case reached the United States federal appeals court in 2018. It was rejected.

The heirs argue that new legislation on restitution of Nazi-looted property allows the claim to be heard again. That point is central. The museum rejects it.

In its countersuit, the Norton Simon argues that the earlier federal judgment in its favour should bar the renewed claim from proceeding. The principle at stake is finality. Once a court has decided ownership, the museum says, the same parties cannot litigate it again.

For readers following the paperwork, provenance, the documented chain of ownership, is the core of the case. The courts must now decide whether the prior judgment controls, or whether the 2024 California law creates a new path for the claim.