Unique 1880 Promberger & Sohn 6'10" Grand Piano - Viennese Action - Straight Strung - An Artifact of Piano History! - with Player

This rare 1880 Promberger & Sohn Viennese grand piano is a fully refurbished historical treasure—featuring a straight-strung scale and the distinctive Viennese action that predates the modern piano mechanism. Built in Vienna during the peak of its musical legacy, this instrument represents a unique chapter in piano history when composers like Mozart, Haydn, and Beethoven relied on similar designs.

We performed a thorough refurbishment to bring it back to beautiful, playable condition—cleaning and buffing the original ivory keys, replacing key bushings, restoring the leather hammers, aligning and regulating the action, and carefully researching the unique features of this Viennese system. The piano retains its original plate, soundboard, and historic design, including a straight-strung layout and forward-facing hammers.

For players, collectors, or institutions looking for a rare, playable example of 19th-century Viennese craftsmanship, this Promberger & Sohn grand is a truly special piece. Nationwide delivery available.