1851 Great Exhibition: Official Catalogue: Class X.: Rock Chidley
544. CHIDLEY, ROCK, 135 High Holborn — Designer, Manufacturer, and Proprietor.
Concertinas, in ivory, with gold stops, working on levers only supported by springs; another in ebony, with glass stops, mounted with gold.
[Though an exceedingly sweet instrument, the concertina is considered to be deficient in forgando effect.- H. E. D.]