![2: Grand Pianoforte by Erard et Cie (London, UK, ca. 1840). Including... | Download Scientific Diagram 2: Grand Pianoforte by Erard et Cie (London, UK, ca. 1840). Including... | Download Scientific Diagram](https://www.researchgate.net/profile/Michel-Bernays-2/publication/263657852/figure/fig2/AS:669525376786453@1536638697835/Grand-Pianoforte-by-Erard-et-Cie-London-UK-ca-1840-Including-80-notes-and-Pierre.png)
2: Grand Pianoforte by Erard et Cie (London, UK, ca. 1840). Including... | Download Scientific Diagram
![Piano, ca 1840, by Erard and Co, wood and other materials, Stock Photo, Picture And Rights Managed Image. Pic. DAE-11148810 | agefotostock Piano, ca 1840, by Erard and Co, wood and other materials, Stock Photo, Picture And Rights Managed Image. Pic. DAE-11148810 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/fe4d5fa4e8d2858ed1850bb0727b34ca/dae-11148810.jpg)
Piano, ca 1840, by Erard and Co, wood and other materials, Stock Photo, Picture And Rights Managed Image. Pic. DAE-11148810 | agefotostock
![2: Grand Pianoforte by Erard et Cie (London, UK, ca. 1840). Including... | Download Scientific Diagram 2: Grand Pianoforte by Erard et Cie (London, UK, ca. 1840). Including... | Download Scientific Diagram](https://www.researchgate.net/profile/Michel-Bernays-2/publication/263657852/figure/fig1/AS:669525376765967@1536638697760/Pianoforte-by-Cristofori-Florence-Italy-1720-one-of-the-earliest-hammeraction_Q320.jpg)
2: Grand Pianoforte by Erard et Cie (London, UK, ca. 1840). Including... | Download Scientific Diagram
![File:Lyraflügel (ca.1820-44) by Johann Christian Schleip, Grand Pianoforte (ca.1840) by Erard et Cie, Pedal Harp (1891-95) by Lyon & Healy, The Met, NYC.jpg - Wikimedia Commons File:Lyraflügel (ca.1820-44) by Johann Christian Schleip, Grand Pianoforte (ca.1840) by Erard et Cie, Pedal Harp (1891-95) by Lyon & Healy, The Met, NYC.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/5/56/Lyrafl%C3%BCgel_%28ca.1820-44%29_by_Johann_Christian_Schleip%2C_Grand_Pianoforte_%28ca.1840%29_by_Erard_et_Cie%2C_Pedal_Harp_%281891-95%29_by_Lyon_%26_Healy%2C_The_Met%2C_NYC.jpg/2560px-Lyrafl%C3%BCgel_%28ca.1820-44%29_by_Johann_Christian_Schleip%2C_Grand_Pianoforte_%28ca.1840%29_by_Erard_et_Cie%2C_Pedal_Harp_%281891-95%29_by_Lyon_%26_Healy%2C_The_Met%2C_NYC.jpg)