In examining the case of Nazi SS officer Friedrich Gustav Kadgien’s paintings, ARCA has been piecing together a troubling picture.  Earlier, we discussed photographs shared on social media by his daughter, Patricia Kadgien.  In this article we will take a closer look at some of the images we have been analysing, along with others we have explored as this case hit the public airwaves.

In our initial forway into the life Kadgien, ARCA grabbed a number of photos from Patricia Kadgien's Facebook page before she and other members of the family set their socials to private.  Three of them, varying in quality, captured a still life oil painting, but only partially in view, as in each photo the painting was obscured by  people in the frame.  

Despite this, key details, such as the cluster of peaches aligned perfectly with the known description, as well as the black and white photo, of the missing painting on record in the Dutch archive. 

As you can see by the date stamp in this photo, Kadgien's daughter uploaded this family portrait to her social media profile on 1 September 2011. It cannot be confirmed that this photo was actually taken in 2011, only that it was uploaded in 2011 as Facebook retains all metadata and adds more, but none of it is available to any end users who might download said image. 

Fast forward to yesterday's Argentinian news reports discussing the fact that there is a remarkably similar artwork in the collection of the Museo Nacional de Arte Decorativo in Buenos Aires.  That artwork has been attributed to a Dutch still-life painter from the northern Netherlands named Rachel Ruysch, not Mignon, who was just a teenager when the older still life painter died. 

Having said that, it is important to note that the attribution of a painting is seldom a definitive process in the absence of a signature or other reliable documentation, and may be reassessed at any stage.  The work in question might have arrived to Argentina from Europe or elsewhere, possibly identified (whether correctly or not), as a painting made by Mignon, and subsequently reattributed thorough study at the museum, or perhaps even earlier by research commissioned by its painting's previous owner.  

Combing through a series of open source websites and archives, we were able to find multiple uploaded images of the "Ruysch-named" painting in the museum's oak-cladded antecámara.  Unfortunately, the earliest instance we have of corresponding images of said work, in said placement inside the museum, date back to 2007 four years before Patricia Kadgein uploaded a still life image to her Facebook profile.

 

In the photos we found or the antecámara, posted the 2000s, the center of the room is occupied by a sculpture by Joseph Pollet. On both sides of the entrance doors are two Dutch oil paintings: the Portrait of a Gentleman by J. C. Verspronck and the Still Life by Rachel Ruysch.  The latter of which also appears in a 2003 museum publication, without a photo or provenance, stating that the Ruysch painting was donated in 1960.   

Other sources state that the painting was bequeathed in 1962 and 1964. 

What is the actual donation date?

The first time the Wayback Machine captures a description of this artwork on the  museum's own web page was saved on 8 April 2008.  On said page, the museum discusses at length, the artist and the subject of the painting, but omits any provenance details or who bequeathed the painting.  Curiously though, it lists the oil painting's dimensions as "0.68 m x 0.65 m., which is practically a square. 

Outlined in blue for comparison are the dimensions of the stolen Mignon-attributed painting registered in the Netherlands (outlined in red).  In blue we have listed the sized attributed to the Rachel Ruysch painting by the museum. As is plainly visible, there is a rather substantial proportion discrepancy in the size documented on the museum's web page.  And while the Mignon-attributed painting archived with the RCE is recorded as matching in height, the painting in Argentina is slightly wider.  If the two paintings are a match, then perhaps the stolen painting was measured previously using the dimensions inside its frame at the time. 

Using the same overlay technique, and a clearer image of the painting straight on, we can compare both the frame of the painting in the museum's antecámara and the frame of the painting from Patricia Kadgien's Facebook page. 

We can also compare other images the museum uploaded in 2020 of the entire "Ruysch-named" painting, contrasting them with the black and white photo in the archive of the painting archived with the Rijksdienst voor het Cultureel Erfgoed in the Netherlands. 

Side by side we can see that both paintings depict the same identical subject. But proportionately could they be one and the same?  To examine the artwork further, ARCA overlayed the RCE's black and white photo with one of the museum's more recent medium resolution images.

We again repeated the process using as smaller photograph uploaded to the museum's socials which captured a close up of the painting's peaches, bird's nest, and lizard.

In our humble opinion, we suspect that this.is.clearly.the.same.painting,  

regardless of which artist the painting has been attributed to.  

Taking our hypothesis one step further, and  also looked at historic photos.  

This 1918 archive photograph of the Errázuriz Palace, (where the museum is located) doesn't show the still life painting in question in the antecámara of the residence, once owned by the Chilean ambassador to Argentina.  Matias Errazuriz, lived in the mansion with his wife Josefina de Alvear before the property was gifted to the state. 

Nor is the still life to be found in archival photos which show objects from the original Errázuriz family collection which were to become part of the founding purchase by the nation when the mansion was transferred over to the Argentina via the National Assembly of the Autonomous Communities when the museum opened in 1937.

What we did not find was any open source documentation or images that confirm that this painting was part of the museum's collection from the time of its purported donation in 1960, 1962 or 1964, until its first contemporary appearance in digital photos and on the museum's website from the 2000s.  Where are the photos over that 40 year interim? 

Unanswered questions, at least for now

Are there any photos of the Still Life by Rachel Ruysch from the time of its donation until the 2000s? 

What confirmatory paperwork does the Museo de Arte Decorativo have that concretises when their painting's donation actually occurred.

What confirmatory paperwork does the Museo de Arte Decorativo have that demonstrates the artwork's ownership history, and from whose hands it pasted from the time of its creation through to the date of the museum's aquisiton?

What details does the Museo de Arte Decorativo have on the donor of the Still Life by Rachel Ruysch painting, and what was this person's relationship to the museum, and what (if any) does this individual or their family have with problematic works of art in circulation during, or after, World War II. 

Is there a link between this painting's arrival in Argentina and the Kadgien family’s activities in Argentina before or after the war?

For now, we are left with more questions than clarity. But one thing is clear: this is not just a story about one contested painting that the Kadgien family kept, despite its reprehensible past. Nor is it even about one family. 

It is emblematic of a broader, unresolved legacy. The postwar years saw countless works of art wrenched away from their rightful owners under duress which were subsequently laundered into “respectable” collections, sometimes even into public museums and institutions. Too often, provenance was overlooked in favour of prestige.

And so, decades later, we are still asking uncomfortable questions. How many of these works remain hidden in plain sight, misattributed, or deliberately misrepresented?  How many institutions prefer to avert their eyes rather than confront their own role in housing suspect objects which might have ties to Nazi looting? 

On principle alone, the opportunity exists, even belatedly, for families and museum personnel to reckon with these histories. To ignore that is to perpetuate the sins of the past.

The case began after Dutch reporters announced they had identified the stolen painting from a published real estate photo which depicted the artwork hanging inside Patricia Kadgien's residence at Padre Cardiel 4152 in the Mar del Plata neighbourhood.  Around the same time, a complaint from the Customs Collection and Control Agency attached to the Buenos Aires Customs House was opened for the alleged crime of concealing smuggling, and a search of the property was authorised by the Mar del Plata Court of Guarantees No. 2 at the request of Carlos Martínez, a prosecutor with the Federal Court's Office for Simple Crimes. 

According to Argentine law, search warrants of this type must be notified, at the time of their execution, to the owner or possessor, or failing that, to any adult present at the premises, preferably the relatives of the former, inviting them to witness said search.  This explains the presence of Patricia Mónica Kadgien and Juan Carlos Cortegoso's lawyer over the five hours when the Mar del Plata Special Investigations Unit executed their search at the home.

Once the house search had been carried out, the prosecutor was required to draw up a report recording the outcome of the search, noting all circumstances that may be of importance to the case.  This report was then signed by all those involved in the search.

As we know from journalistic reports last week, by this point in time the family had intentionally moved the stolen painting elsewhere, replacing its place on the wall with a large carpet.

In a statement given to the daily Spanish-language newspaper La Capital, by the family's attorney, Murias, said "Technically, the painting is being filed as a result of a judicial process. It is being filed in the Civil Court, which we consider competent to resolve this matter, not in the Criminal Court, in the context of an alleged complaint filed by Arca for a crime that my client is allegedly being charged with for 'covering up smuggling..."

Yesterday, Patricia Kadgien and her husband were placed under house arrest for 72 hours while the case remained under investigation by federal prosecutor Carlos Martínez.  Police confirm an additional three searches have been carried out at addresses in and around Buenos Aires, including one at an apartment located at Calle Santa Fe 1700.  In the interim, the judge assigned to this case has ordered that the summary of these actions be kept sealed for 48 hours, meaning we will have to wait to know what details and evidence was found during these other searches at homes linked to Kadgien and the couple’s relatives.

As of now, neither Friedrich Kadgien's daughter nor his son in law, has been charged in the criminal court with obstructing a police investigation for what appears, at least  on the surface, to have been the intentional removal of the Ghislandi painting to impede its seizure.  Yet, the deeper question persists: why continue to shield and deny, when the opportunity exists to make amends? Especially given Patricia Kadgien was just thirteen when her father died. 

On principle alone, one might expect her or her sister Alicia Maria Kadgien to step forward, to repudiate the sins of their father, and to return what was stolen.  Imagine having the chance to reconcile, even in a small way, with history’s injustices, and the things your family did, only to choose instead to perpetuate them.

3 September 2025 Update: Argentina’s Federal Attorney General Daniel Adler announced that the painting  "Portrait of a Lady" stolen from Jacques Goudstikker has been placed under protection after Argentine Judge Patricia Noemí Juárez, of the 11th Civil Court, held that after analyzing the elements incorporated into the case and a hearing held with the Federal Prosecutor, "I must conclude that the ordinary jurisdiction is not competent to intervene in a case where the Federal Justice is ultimately pursuing the seizure of a work of art with an alleged illicit origin."

On Monday, the internet lit up after Algemeen Dagblad published an explosive investigation by Peter Schouten, John van den Oetelaar, and Cyril Rosman, revealing the identification of two World War II-era paintings linked to the family of Friedrich Gustav Kadgien, sparking renewed attention to Nazi-looted art hidden abroad.  Kadgien, a Nazi SS officer, served as Reichsmarschall Hermann Göring’s liaison with Swiss banks in his work connected with Germany's Vierjahresplan before splitting for Argentina, Brazil, and Uruguay as Germany lost the war.

Friedrich Kadgien's visa for Uruguay.

Building on this revelation, ARCA released its own article yesterday, outlining some of our parallel research into the tragic losses of Amsterdam dealer Jacques Goudstikker, as well as tracing a brief outline of Kadgien’s movements before and after his escape to South America.  As the case remained a developing one, we discussed only the general outlines of our own OSINT and SOCMINT explorations,  in order to give Kadgien's relatives time to respond. 

Today, journalists Schouten and Rosman reported that federal prosecutor Carlos Martínez has opened a case of concealment of smuggling, in cooperation with INTERPOL and the Policía Federal Argentina. As a result of this investigation law enforcement officers from Mar del Plata's Special Investigations Unit executed a search warrant, authorised by the Mar del Plata Court of Guarantees No. 2, which was carried out at a home in Mar del Plata in search of the 17th century painting Portrait of a Lady by Giuseppe Vittore Ghislandi, looted during World War II.  Kadgien 's youngest daughter, accompanied by her husband and lawyer, were present during the search.

During the police raid, investigators discovered that the family had removed the artwork, leaving its current whereabouts unknown.  Where it had hung on the wall, a tapestry with a horse had been hung.  Despite this, more than 25 prints from German and French collections from the 1940s were seized, along with relevant documentation, two cell phones, a revolver, and a shotgun.

This painting, by Italian artist Giuseppe Ghislandi, was stolen from Jacques Goudstikker's collection when the Jewish Dutch art dealer fled the Netherlands as it was invaded by Nazi Germany

This case got underway after the artwork depicting Cecilia Colleoni had been discovered in a photograph uploaded for a Robles Casas & Campos real estate advertisement.  The image depicted the 17th century countess behind a green couch next to a wooden and glass tile coffee table, which unfortunately, by mistake or design, forms the shape of a swastika, an ancient religious symbol, adopted by Adolf Hitler to represent the German Reich

The Nazi used the right facing form of a swastika at an angle of 45 degrees with the corners pointing upwards.

Shortly after the news broke in Europe this week, Robles Casas & Campos removed the photos and changed the Mar del Plata housing listing to another property in barrio Parque Luro located 5 km away. Reviewing documents for Argentine companies listed as Sociedad de Responsabilidad Limitada ARCA found that the original Buenos Aires home, located at Padre Cardiel 4152, Mar del Plata, was owned, and/or occupied, by Kadgien's younger daughter, Patricia Mónica Kadgien and her partner Juan Carlos Cortegoso.  

As the story gained steam within the international press, Patricia Kadgien, who had already stopped communicating with the Dutch journalists, switched all of her social media channels private, as did other relatives and former employees of the family.  As an added precaution, Kadgien, also changed her online name from Patricia Kadgien to Monica Cortegoso.  

But before these changes were made, ARCA had already captured a series of photos posted by the former SS officer's daughter, which were of two additional artworks. 

One was described by the Dutch journalists as a still life painting depicting a crowded display of peaches and other fruit, a bird's nest, insects and a lizard.  This oil painting is believed to have been completed by the German artist Abraham Mignon (1640–1679), and was also being searched for as a World War II era loss by the Dutch Rijksdienst voor het Cultureel Erfgoed. 

ARCA captured a grouping of images of this artwork posted on Kadgien's socials in 2011, which showed what is believed to be the Mignon painting displayed behind three individuals.  While the wall-mounted light illuminating the painting from above causes the artwork to be out of focus, we could clearly see three peaches poking through. 

Still life painting by Abraham Mignon which was known to have been purchased by Friedrich Gustav Kadgien, a lawyer responsible for foreign currency procurement through Swiss front companies for the Vierjahresplan.

Discovered 3rd painting in a rental residence advertised by Kadgien's daughter.

Two of the original images ARCA captured from a 2019 posting before the take-downs occurred, showed the exterior of this property.  One of these corresponds to a newer December 2023 photo uploaded by Kadgien's daughter which depicts the same house, showing a portion of the same veranda and the same white table. 

This third artwork can also be seen in this local Ahora Mar del Plata news site photo, showing that it was seized along with other suspect works when the search warrant was executed.  This painting and these other works on paper, will now need to be sifted through, though we can already see that some of the prints appear to be part of the Henri Matisse. Seize peintures 1939-1943, a First Edition set of 16 Prints

Published by Les Editions du Chene in Paris in 1943. 

For now, the Portrait of a Lady by Giuseppe Vittore Ghislandi has not been recovered.  Nor, it seems, has the other high value still life by Abraham Mignon.  One has to hope that Patricia, her husband, her sister Alicia Maria Kadgien or other members of the family, will cooperate more with police and prosecutors than they did with the journalists covering this evolving and long time coming story. 

For our preceding article on this case see this link. 

By Lynda Albertson and Alice Bientinesi