Columbia Catechin 3B by Actien Gesellschaft fur Anilin...
Columbia Catechin 3B by Actien Gesellschaft fur Anilin Fabri
Columbia Catechin 3B by Actien Gesellschaft fur Anilin Fabrikation, Berlin in Germany. One of a collection of colour dyes in bottles from the Colour Museum in Bradford, West Yorkshire, c.1900.