Advertisement Poster for the German Piano Manufacturer <a href="https://en.wikipedia.org/wiki/C._Bechstein_Pianofortefabrik" class="extiw" title="w:C. Bechstein Pianofortefabrik">C. Bechstein</a> published around 1920.
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<a href="https://en.wikipedia.org/wiki/de:Bruno_Bielefeld" class="extiw" title="w:de:Bruno Bielefeld">Bruno Bielefeld</a><br>Digitisation: Erik Bohr</div>
C. Bechstein Factory, Berlin, Germany