Brillant Cresylblau 2B, Brilliant Crysel Blue, Bleu cresyl b
Brillant Cresylblau 2B, Brilliant Crysel Blue, Bleu cresyl brilliant-2B by by A. Leonhardt & Co., Farbwerk Muhlheim, Muhlheim a/Main in Germany. One of a collection of colour dyes in bottles from the Colour Museum in Bradford, West Yorkshire, c.1900.