???-ne Brown G by Farbenfabriken vorm Fr. Bayer & Co....
???-ne Brown G by Farbenfabriken vorm Fr. Bayer & Co. Elberf
???-ne Brown G by Farbenfabriken vorm Fr. Bayer & Co. Elberfeld, Manufactured in Germany. One of a collection of colour dyes in bottles from the Colour Museum in Bradford, West Yorkshire, c.1900.