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A grand piano by Conrad Graf, Vienna, circa 1820 - May 11, 2016 | Dreweatts Donnington Priory in United Kingdom
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Conrad Graf ca.1819
Graf piano copy by Paul McNulty | New Paul McNulty Graf for Seoul National University is now fully playing! (please note 6 pedals including Turkish music and bassoon) | By McNulty Fortepianos
Paul Poletti - Construction and Restoration of Historical Pianos
Conrad Graf 1826/1827 - Fortepiano
Graf Grand Piano | National Museum of American History
Make Beethoven's Piano Great Again! - WORLD PIANO NEWS