Katana - is it arsenal Marking ? help me please

Hello,

can you help me please - the first 4 pictures - is it an arsenal Marking?
5. picture - i tried to translate - Katana signature is - bungo ju Fujiwara nagayuki??

Thank for help
Burkhardt

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Hi Burkhardt, In my opinion

Hi Burkhardt,

In my opinion these aren't arsenal markings, but just some kind of fitting marks. Maybe I'm wrong.

The signature looks more like Kuniyuki.

Regards,
Stan

arsenal markings

Hi Stan,

Thank you so much for Help

Reagards
Burkhardt