GOTTESMANN QUARTET: Vintage signed sepia 3.5 x 5.5 postcard photograph by all four members of the Viennese chamber group individually, comprising Hugo Gottesmann (1896-1970) Austrian violinist, violist, conductor, and chamber musician, Richard Krotschak (1904-1989) Austrian cellist and pedagogue, Wilhelm Muller (second violinist) and Ignaz Ganz (viola), the image depicting the four musicians in the early 1930s standing and seated together in full-length poses, each holding their instruments. Photograph by Fayer of Vienna and bearing their blindstamp to the lower border. Signed by all four in dark fountain pen inks with their names alone to the lower border. About EX