Argentine authorities have recovered an 18th‑century Italian portrait tied to Nazi looting and seized 22 additional works during raids on properties linked to the daughter of a former German officer, investigators and experts said, prompting renewed warnings that tens of thousands of Nazi‑stolen artworks remain unaccounted for.
The painting, identified as “Portrait of a Lady” by Giuseppe Vittore Ghislandi and valued by some experts at more than $500,000, was traced to a seaside home in Mar del Plata and turned over to police after inquiries by a Dutch journalist. Prosecutors charged the homeowner, Patricia Kadgien, 59, and her husband, Juan Carlos Cortegoso, 62, with concealment, alleging they hid the work and substituted a tapestry after being questioned. Local press reports said the couple face up to six years in prison if convicted.
Investigators said the recovered Ghislandi portrait had been in the collection of Dutch Jewish dealer Jacques Goudstikker before it was looted when the German army invaded the Netherlands in May 1940. The painting was purportedly acquired in 1944 by Friedrich Gustav Kadgien, a German officer who, according to historical records and a Swiss commission report, helped secure and transfer stolen Jewish assets before fleeing to South America after World War II. Kadgien later became an Argentine citizen and established businesses and a large ranch; he died in 1978.
Cyril Rosman, a Dutch investigative journalist who has spent years tracking the Goudstikker collection, located the work after spotting it in a real estate listing, officials said. Prosecutors allege Kadgien’s daughter attempted to conceal the painting after inquiries by Rosman, replacing it with a tapestry in the home. The painting was surrendered to police after the family’s lawyer intervened, according to Argentine press reports.
Alongside the Ghislandi, authorities seized 22 other works during multiple searches. Officials did not immediately provide a full public inventory, but images released by police show some pieces attributed to 20th‑century artists including Henri Matisse. The seizures follow a growing international effort to identify and return art looted by the Nazis and their collaborators.
Experts said the Argentine operation highlights both the persistence of Nazi‑era thefts in private hands and the difficulty of locating and restituting missing works. Jonathan Petropoulos, a historian at Claremont McKenna College who has written extensively on Nazi art plunder, called the discovery significant but cautioned that it is just a small fraction of a much larger problem.
"There is a lot of Nazi looted art throughout the world that has been concealed from public view," Petropoulos said. He and others have pointed to an estimated 100,000 valuable works that remain missing or held in private collections without restitution, drawing on lists compiled by organizations such as the Monuments Men and Women Foundation and earlier government commissions.
Among the most notable pieces still listed as missing are Raphael’s Portrait of a Young Man, which experts say could be worth tens of millions of dollars, and Vincent van Gogh’s The Painter on the Way to Tarascon, last recorded in 1945 in the Neu‑Stassfurt salt mine where the Nazis stored artworks to protect them from Allied bombing. Other high‑profile losses include works by Egon Schiele, Claude Monet, Camille Pissarro, Edgar Degas and Auguste Rodin.
Schiele’s Boats Mirrored in the Water, part of a trove confiscated from Austrian‑Jewish collector Fritz Grünbaum — who died at Dachau in 1941 — is among dozens of that artist’s works still subject to restitution claims. Recently recovered Schiele works have sold for millions at auction, demonstrating both their cultural importance and market value.
Petropoulos noted a difference in legal approaches in Argentina compared with some recent cases in the United States and Europe. "The Argentine police are the first since World War Two to employ criminal statutes to arrest possessors of Nazi looted art and to use the criminal proceedings against possessors to ensure the return of the artwork," he said, citing a shift from civil restitution cases toward criminal enforcement. In 2023, Manhattan prosecutors seized 11 Schiele works from several U.S. institutions in a high‑profile recovery, but that probe did not result in criminal arrests.
Investigations into Nazi‑era looting have produced sporadic recoveries and legal battles over provenance, ownership and compensation. Allied forces and postwar commissions recovered and returned many items, but the scale of plunder — estimated at more than 600,000 artworks over 12 years of Nazi rule, according to a U.S. Presidential Commission on Holocaust Assets — means gaps remain. Records compiled by the Monuments Men and nonprofit databases have helped descendants, museums and governments identify missing pieces.
Legal authorities in Buenos Aires said the case will proceed as they inventory seized items and examine documentation of ownership and wartime transfers. Argentine prosecutors have emphasized cooperation with international partners and researchers tracing the provenance of contested objects.
Observers said the Mar del Plata recovery could spur further searches and claims in countries where Nazi fugitives settled after the war. Friedrich Kadgien, the patriarch whose name appears in records linking him to looted art, lived in Argentina alongside other former Nazis and reportedly used business and political connections to shield assets and move goods. Documentation and witness accounts compiled by historians and commissions in Switzerland and elsewhere have helped trace such networks.
For heirs and museums that have pursued restitution, each discovery can provide both a measure of closure and a reminder of unfinished work. Researchers and recovery specialists said they expect more cases to surface as digitized archives, investigative journalism and cooperation among cultural institutions continue to shed light on the largest art theft in modern history.
Authorities have not released a detailed list of all seized works or a timeline for their return to potential rightful owners. The legal and ethical complexities of restitution cases mean the newly recovered pieces could be subject to prolonged investigation, claims and litigation. Meanwhile, experts reiterated that while notable recoveries attract attention, most missing works likely remain dispersed in private collections or estates around the world.