Sir William Henry Perkin established on this site in 1857 the first synthetic dye factory in the world. Respice prospice. 1838-1907.

replaced by #10010

Plaque is now missing

Howdens Joinery, Oldfirled Lane North, Greenford, London
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by Royal Society of Chemistry in 1957

Colour: blue

Wikimedia:

Flickr:

See also...
Brian Cooper on Flickr