Openletter knife of Renaissance?

[montalifr]

Good evening,
I'm trying to evaluate an openletter knife. The object has been evaluated as German (from Augsburg, Augusta or Munchen in the XVIth century), but the specific mark is not really identified, because the mark is very ancient. Can I have your opinion? Thank you very much,
sincerely,
Francesca

[montalifr]

Sorry here are the photos,
Thank you very much

[Theoderich]

I am not sure, but it could be from Schleissner (Hanau)

[AG2012]

Hi,
I opt for Hanau,too.
Not Augsburg acorn and not Renaissance silver.Turn of 19th century.
Regards