It looks red in the photo but is it red or black? It might be a piece of cloth or some other loose debris or maybe even a dab of ink. Have you determined that it is actually a mark on the coin itself?
It's hard to tell what it is based on the photo alone. But unfortunately any kind of blemish or imperfection does indeed impact the value of any coin. However some coins are less affected than others. People tend to be more forgiving with ancients than moderns.
its a red spot.i thought maybe it was toning.Its sealed in the holder so i'm wondering how this happened.
For reasons that I can’t understand, these red spots show up on modern U.S. gold coins, the pieces that are supposed to be .999 pure. It must have something to do with the cleaning agents the mint uses, but it is very annoying. Yes it does make the coin harder to sell and less valuable.
I don't send any of my coins to a TPG, so I haven't had a reaction from them. I keep all of my gold coins in the original Mint packaging. I think I am going to look at them to see if I have anything like that on them. I also have the 3 commemorative gold coins and would not like it if there is a spot on them.
Take it to a trusted local dealer. You could also ask the seller or worst-case scenario, crack it open, but that's not a good idea at all. Good luck.
