Need help trying to find a rough age of this old earing?

[ty watts]

Found this and it looks old. %100gold,not sure what ct tho?
Has a tiny mark on loop at top,as can be seen in pics,but lots worn away.

 

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[tamrock]

The mark might be what the Egyptians use.

 

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[Digger RJ]

Found this and it looks old. %100gold,not sure what ct tho?
Has a tiny mark on loop at top,as can be seen in pics,but lots worn away.

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