6 1/2-octave Viennese fortepiano soundboard Extended Compass 6 1/2-octave Viennese fortepiano by R. J. Regier Extended Compass 6 1/2-octave Viennese fortepiano by R. J. Regier
6 1/2-octave Viennese fortepiano hammer shank
6 1/2-octave Viennese fortepiano nameplate