Ryoei Saito
Portrait of Dr. Gachet is one of the most revered paintings by the Dutch artist Vincent van Gogh. It depicts Dr. Paul Gachet, a homeopathic doctor and artist with whom van Gogh resided following a spell in an asylum at Saint-Rémy-de-Provence. Gachet took care of Van Gogh during the final months of his life. There are two authenticated versions of the portrait, both painted in June 1890 at Auvers-sur-Oise. Both show Gachet sitting at a table and leaning his head on his right arm, but they are easily differentiated in color and style. There is also an etching.
The first version was acquired by the Städel in Frankfurt in 1911 and subsequently confiscated and sold by Hermann Göring. In May 1990, it was sold at auction for $82.5 million ($171.1 million today) to Ryoei Saito, making it the world's most expensive painting at that time. It then disappeared from public view and the Städel was unable to locate it in 2019. The second version was owned by Gachet and was bequeathed to France by his heirs. Despite arguments over its authenticity, it now hangs in the Musée d'Orsay, in Paris.
Source: Wikipedia