George Henry Blake, ‘Grand Pianoforte’, ca. 1840, The Metropolitan Museum of Art

London, England, United Kingdom
http://www.metmuseum.org/art/collection/search/503046

Image rights: The Metropolitan Museum of Art (Gift of Mrs. Henry McSweeney, 1959), licensed under CC0 1.0 Universal

About Maison Érard

French, established 1780 - 1950