Hard to prove, but a fun theory nonetheless.
The wolves, moon and sun are often depicted in old Germanic
and European swords. These could refer to the Norse mythology of sol and mani being chased by wolves.
Another fun theory. Solingen could refer to sol. No one knows.
My point is:
The face could just symbolize sol or the sun. I have seen more swords with a similar face on the blade. I will post an example if I can find one.
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