Broadwood & Son 1804, London (1783 patent)	Martin 1825, Madrid
Broadwood & Sons 1825, London	Chickering & Mackays ca. 1838, Boston
Robert Wornum ca. 1840, London	Robert Wornum & Sons ca. 1850, London
Chickering & Sons ca.1857, Boston	Stodart ca.1857, New York
Chickering & Sons ca. 1857, Boston

(all rights reserved on the drawings with
the borders, Clark Panaccione, 2006)

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