The image is (partially) similar to the painting at Christies in New York in 1998, with Czuszka in Genova/ Montreal, Dr. von Frey in Luzern (67 x 40!), Art trade Smith in London,  an unknown privately in Cologne (maybe Private possession of Quadt von Wickrath Ising (Countess Quadt-Wykart-Isny) –  Art Trade Galleria in Paris