Excellent digging there Axel as you seem to have found the missing pieces. With Franz Jger's uncle being Gustav Kersten solves some mysteries. I'm a bit puzzled by the trademark Nimrod of Franz Jger & chemist Ewald Ldecke though as I thought that to be of Thieme & Schlegelmilch?

Originally Posted By: kuduae
In May 1907 Franz Jaeger together with Ldecke registered "Franz Jaeger & Co.", trademark "Nimrod", and built a factory at Pfiffergrube 17.


Kind Regards,

Raimey
rse