"JF"- who is this early 20th C. German maker?

[Ag999]

I've gone through all the usual German makers' marks sources, and cannot find who this "JF" maker is.

Any ideas?

6 cm tall, 800 shot glass, with opium poppy motif.






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[Bahner]

Hello, Johann Franz jr. from Gmuend. Regards, Bahner

[Ag999]

Thank you!