Black line on gold coin??
I purchased this coin the other day and it arrived today. Due to a mark that is clearly visible to the eye, but that does get washed out in photos with extra lighting, it likely is being returned. However I am perplexed as to what would’ve caused this. I am pretty sure it’s on the coin, and it has the appearance of almost a felt tip pen mark. Coin has a fairly high grade and CAC review. I would think that the mark showed up after encapsulation and CAC review, but since I have no idea what it could be, perhaps it’s been there all the time. It is in an older holder. Any thoughts on what caused the mark?