identify maker and period

[silverbox]

[AG2012]

Hi,
Franz Mosgau, Berlin
See here:
https://www.925-1000.com/Fgerman_marks_a1884_7.html

Regards

[AG2012]

And here:

viewtopic.php?f=38&t=33091&p=172348&hil ... in#p172348

Retailed by Posen, Frankfurt am Main and Berlin (the box looks original for the items inside it). They were active until 1930.

[Bahner]

Hello, actually Posen was active in Frankfurt until November 9th, 1938, when the shop was looted during "Kristallnacht" and never reopened. As to the closure of the Berlin branch of Posen I have been unable so far to find th exact date but supect a similiar one and the same reason. Regards, Bahner

[silverbox]

Thank you