13 lot silver duck jewelry box with unknown maker's mark

[maximus121]

good morning,

I inherited a 13-lot silver duck trinket box and am a bit at a loss identifying the master and city mark. In terms of craftsmanship, I would actually assign them to the Russian or Baltic region. But that doesn't fit with the 13.

Does anyone have an idea or have seen the marks before?

Many thanks in advance and best regards,
Max

[AG2012]

Hi,
Unless proven otherwise, I would opt for Hanau.
Regards