Hey, maybe it was stored in a hard vacuum where the mean free path of the sulfide ions was greater than the distance from the paper to the coin surface. What could be more natural than a hard vacuum? Statistically, your chances of encountering anything else anywhere in the universe are effectively zero...
Now that right there is a true entrepreneur! You saw something unique that folks were talking about and instead of just looking at it, you actually put your money where your mouth is and figured a way of making the situation work for you. I sincerely hope it does pay off and if it flunks, hey, you still get to own something weird for a nominal fee
Well, I'll never know if they will grade the toning as legit, because I got it this weekend, and it's been cleaned. In my opinion, looking at it in-hand, whatever method was used to harshly/improperly clean the coin caused the surfaces to take on the strange letter transfer. Oh well, just a $16 risk. I'm going to auction it off starting at 99 cents. Here's my pic.