"Portrait Of Sybille 1949"
Very curious work, executed in 1949. It is a gouache measuring 27 x 21.5 cm (sheet) and 23 x 18 cm (subject). With period framing, 42 x 34.5 cm. At the bottom, numerous inscriptions and numbers. I haven't been able to identify the artist. Free delivery in Paris possible. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato