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Mystery marks

Posted: Wed Sep 14, 2016 4:23 pm
by sebastian4743
I have never seen such marks... unfortunately I could not find them i the "silver marks" repository. Maybe someone can help identifying these marks? Thank you!

Image

Re: Mystery marks

Posted: Mon Sep 19, 2016 1:57 pm
by Traintime
What is the nature of the object the marks appear on? Can you submit full photos of it?