Keywords: Rudolf Christian Böttger by Friedrich Schierholz - DSC02298.JPG Bust of Rudolf Christian Böttger by Friedrich Schierholz near the Naturmuseum Senckenberg Frankfurt am Main Germany This artwork is old enough so that it is in the public domain Daderot 2012-07-22 00 32 04 Daderot cc0 cc0 Rudolf Christian Böttger by Friedrich Schierholz |