German postcard by Ross Verlag, no. 4845/1, 1929-1930. Photo: Atelier Binder, Berlin.
Camilla Horn (1903-1996) was a German dancer and film star. She starred in some Hollywood films of the late 1920's and also in a few British and Italian productions.
Camilla Horn made her great breakthrough in 1926, when she replaced Lillian Gish for the part of Gretchen in F.W. Murnau's lavish Ufa production of Faust. In 1928 she sailed for Hollywood where she played opposite John Barrymore in Tempest (1928) and Eternal Love (1929, Ernst Lubitsch). She returned to Europe, and in the 1930's refused to follow the official line of the Nazis and was prosecuted for a monetary offense. From 1930 until her retirement in 1953, she remained a screen favorite in German, British, and Italian films, and late in life, she starred in Schloss Konigswald (1988, Peter Schamoni).
Sources: Wikipedia, IMDb etc.