A painting by the artist Toon Kelder (Rotterdam, 1894-1973), titled Portrait of a Young Woman, stolen by the Nazis from the renowned art dealer Jacques Goudstikker, has surfaced at the home of the granddaughter of Hendrik Alexander Seyffardt, a Dutch general who commanded the Netherlands Volunteer Legion during World War II, a Waffen-SS unit that fought on the Eastern Front. A descendant of Seyffardt, unaware of the relationship, made the painting’s existence public through Arthur Brand, nicknamed the “art detective.”

The story of the painting is doubly painful for the relative in question, “whose identity we are keeping anonymous,” says Brand, speaking by phone. On the one hand, there is the profound emotional shock suffered, since “the informant was unaware that his relative had been one of the most prominent Dutch collaborators with the Nazi regime.” In 1943, Hendrik Alexander Seyffardt was shot in his home in Scheveningen — the coastal district of The Hague — by two well-known resistance fighters, Gerrit Kastein and Jan Verleun. The general died the following day, and his two assailants were arrested and later killed by the Nazis. Seyffardt had a son, Hendrik, who also collaborated with the occupiers. Married and divorced in 1944, his wife — the general’s daughter-in-law — with whom he had children, changed her surname, and the family’s past was never discussed again. “That new surname, which we are not revealing, is the one borne by the descendant who contacted me, and the painting has remained with the family since the war,” Brand explains.

The second blow to his informant was the discovery that the painting by Kelder belonged to the collection of Goudstikker, an expert in Old Masters and one of the most renowned art dealers of his time in Amsterdam. His collection was looted and remains one of the most significant claims of art stolen by the Nazis. Hermann Göring, commander-in-chief of the German air force, acquired the entire collection in a forced purchase. “That painting must never be sold because it is looted Jewish art, stolen from Goudstikker. It is unsellable. Don’t tell anyone,” the granddaughter warned the relative who had revealed its existence. Together, they took it down, and on the back, on the frame, was a label with Goudstikker’s name.

After receiving the call from the intermediary, Brand confirmed that Portrait of a Young Woman was part of the lot looted by the Nazis. It hadn’t been sold independently by Goudstikker. On October 9, 1940, the Frederik Muller auction house in Amsterdam presented a portion of the art dealer’s collection. “A few months earlier, it had passed into Göring’s hands, so that auction is considered looted art,” says Brand. He searched for the signature of the painter Toon Kelder and found three works. “One of them was number 92, the same one that appears on the back of this canvas.” He then contacted the lawyers representing Goudstikker’s heirs. In their response, they indicated that they could “determine that these three works were included in the Frederik Muller auction.” They added that “the number 92, written in chalk on the back of the work, is further proof that it was in the auction.” “We have seen that type of inscription on other pieces included in that sale and which have since been returned,” they replied.

The “art detective” was then certain that the painting had been looted and the dealer’s descendants wanted it back. “I relayed my discovery to the intermediary, who spoke with the family member,” Brand continues. “This person wanted to do everything possible to return the painting and gave permission to make the story public.” He asserts that he “feels a deep shame about the family’s past and is furious about the years of silence.”

From a legal standpoint, the Dutch police cannot confiscate the painting because the statute of limitations has expired. Furthermore, the Restitution Committee, which advises the government on art stolen by the Nazis, lacks the authority to order searches or seizures. It only deals with claims made against the Dutch state and has no jurisdiction over private individuals.

“It’s possible that Seyffardt bought the painting at the Muller auction in 1940. And it’s also possible that it passed into the hands of his son, Hendrik, after his father’s assassination,” Brand reflects. He also considers it likely that Hendrik’s ex-wife “took it after their divorce in 1944, because it now hangs in the home of a daughter: the granddaughter of the general who collaborated with the Nazis.” The expert acknowledges that this has been “the strangest case” of his entire career. He recalls that “thousands of young men lost their lives under Seyffardt’s command, and after his assassination, dozens of innocent civilians perished in retaliation.” At the end of the conversation, he emphasizes that while the family “bears no personal guilt for these crimes, they had the opportunity to return the painting.” “They chose not to,” he concludes.

Another piece from the Goudstikker collection, Portrait of a Lady, from around 1710 and attributed to the Italian artist Giuseppe Vittore Ghislandi, surfaced in 2025 in a house in Mar del Plata, Argentina. It was spotted in a real estate advertisement. Argentine authorities acted swiftly, and the family handed over the painting in September 2025. It had arrived there in the possession of Friedrich Kagdien, a financial advisor to Göring, who fled to Argentina after the war and lived there until his death.

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