Gerben,
Sorry to have mislead You Folks with a lousy Photo.
I have edited the original post and added on the Macro Photo below it.
After finding my Macro Lens the Marking shows to be different than I had been able to see with my 7X Inspectors Magnifier.
To mw it seems to appear to be an "Aries" or "Anchor" like symbol partially over struck on a previous mark of some kind, and is slightly mis-aligned there from.
Viggo
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