Im hoping to catch the experts eyes on this one. Or anyone can offer an opinion. I have a 20th century type coin collection housed within a Whitman book with vinyl sliders. My Indianhead is a 1899 that was very red when I bought it. In the 5 years it has been in the book, it has developed some serious rainbow toning. Beautiful in the sunlight!! I know this is due to the acidity in the book itself. Is this toning purely subjective as far as value? As to say, beauty is in the eye of the beholder?

Jrwild62 - AS to the value of the coin - YOU WILL RUIN THE VALUE OF IT IF YOU TRY TO CLEAN IT!! IT should be cleaned ONLY be an expert, that is qualified in this field, NACA OR NAC WILL give you the info. For getting it cleaned. They have experts for this, IF YOU CLEAN IT AND THEN WANTED TO HAVE A CO> GRADE THE COIN <YOU WILL BE VERY UPSET WHEN YOU HEAR THAT IT IS UNGRADEABLE<DU TO BEING CLEANED IMPROPERTY> COINS due have a way of doing this, but changing the inviorment it is in will help a great deal. Put the coins inside a plastic type case that is inclosed ;;; Have a great day and GOD BLESS ::: F.B.E.