Ponceau 3RB by Actien Gesellschaft fur Anilin Fabrikation,...
Ponceau 3RB by Actien Gesellschaft fur Anilin Fabrikation, B
Ponceau 3RB 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.