Diaminechtscharlach 4BFS patentirt by Leopold Cassella &...
Diaminechtscharlach 4BFS patentirt by Leopold Cassella & Co.
Diaminechtscharlach 4BFS patentirt by Leopold Cassella & Co. G.m.b.h. Anilinfarbenfabrik Frankfurt o.M in Germany. One of a collection of colour dyes in bottles from the Colour Museum in Bradford, West Yorkshire, c.1900.