A painting stolen from a Jewish art collector by the Nazis during World War Two has been found in the home of descendants of a notorious Dutch SS collaborator, an art detective says.
Portrait of a Young Girl, by Dutch artist Toon Kelder, is believed to have hung for decades in the home of Hendrik Seyffardt's family, Arthur Brand said. He added later it had been handed over to his team.
The painting belonged to a Jewish art dealer who died fleeing the Nazi invasion of the Netherlands, leaving a collection of more than 1,000 paintings.
The case was brought to Brand's attention by a man who told him he was a descendant of Seyffardt "disgusted" to learn his family had kept the artwork for years.
Seyffardt was a Dutch general who commanded a Waffen-SS unit of volunteers on the eastern front before he was assassinated by resistance fighters in 1943.
Shortly after learning he was related to the Nazi collaborator, the man approached his grandmother to ask about the painting's history.
She is said to have told him it had been purchased during World War Two and that it was "Jewish looted art, stolen from [art dealer Jacques] Goudstikker. It is unsellable. Don't tell anyone."
The family, which changed their name at the end of the war, have admitted being in possession of the painting but denied knowing its true origin, according to a statement to Dutch media.
After learning of the painting's history, the family member contacted Brand through an intermediary, believing the only way for it to be returned was for the story to be made public.
The family member told Dutch outlet De Telegraaf: "I feel ashamed. The painting should be returned to the heirs of Goudstikker."
In a statement to the same newspaper, his grandmother said: "I received it from my mother.
"Now that you confront me like this, I understand that Goudstikker's heirs want the painting back. I didn't know that."
Upon being informed of the painting's existence, Brand launched his own investigation.
He discovered the painting had a label on the back and the number 92 etched into its frame.
Brand then searched the archives of a 1940 auction where much of Goudstikker's looted collection was sold and discovered an item under the number 92 titled "Portrait of a Young Girl" by Toon Kelder.
Brand believes the painting had been plundered by Hermann Goering, one of the most powerful figures in the Nazi Party, when Goudstikker fled for Britain in 1940.
It was then sold to Seyffardt at auction before being handed down to his descendant, Brand says.
After launching his investigation, Brand contacted the lawyers of Goudstikker's heirs, who he said confirmed the collector had previously owned six paintings by Toon Kelder.
He added that the lawyers also confirmed to him these paintings had been included in the 1940 auction where Brand believes Portrait of a Young Girl had been sold.
Brand told the BBC that the discovery was "stunning", describing it as "the most bizarre case of my entire career".
He added that, if the painting were to be put on sale, it could fetch a hefty price.
"Such paintings could been sold anywhere between thousands and tens of thousands," Brand said.
However, the sale of looted art is generally illegal in most countries as the works are seen as being sold under duress.
While this is the case, Portrait of a Young Girl could potentially be sold due to the statute of limitations on its theft having expired.
"I have recovered Nazi-looted art from World War Two before, including pieces in the Louvre, the Dutch Royal Collection, and numerous museums," Brand continued.
"But discovering a painting from the famous Goudstikker collection, in the possession of the heirs of a notorious and famous Dutch Waffen-SS general, truly tops everything."
He added: "For decades, the family, who of course bear no personal guilt for Seyffardt's own crimes, had the opportunity to do the right thing and return this painting. They chose not to."
However, he later told the BBC without explaining further: "The painting has been handed over to us."
This discovery draws parallels to a previous case where an Italian master painting stolen from the Goudstikker collection by the Nazis appeared on the website of an estate agent selling a house in Argentina.
A photo showed the portrait of a Lady by Giuseppe Ghislandi hanging above a sofa inside a property near Buenos Aires, once owned by a senior Nazi official who moved to South America after the Second World War.
The discovery led to a police raid on the property, but the painting had seemingly been taken down and moved by the time authorities arrived.
