I do not know what you mean by "oem", No, the mark is not normal.
oem - no box packing.
can i try to remove spirit this black line or what better to do this?
Are you saying this was sold as new? Someone is selling 7 year old processors as new?
I would take it back to the place of purchase.
Provide a photo of the top side.
That's someone writing on the processor with a magic marker; not unexpected for a used processor -- unless you were expecting a new processor, which this definitely isn't.
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