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Message:: [QUOTE="Arcane76, post: 7873480, member: 113565"]No, I’m not asking because I want to fool them. I am asking because I purchased a TPG graded coin at a coin show the other day. It was UNC details scratched OBV. I looked at the coin ( not just the holder) I observed the scratch and it wasn’t that bad. I also looked over the whole coin and liked what I saw. Now, not to open a whole can of worms so to speak, I like my coins out of the holder. So I cracked it out( again that’s just my personal preference). Looked at the coin and was really pleased. I placed it into a Abafil tray with other coins and went about life. Today I went to look at said coin and ! It looks very different! Harshly cleaned perhaps even whizzed! So my question: Has this happened to anyone else? Is it possible that a chemical or substance can be applied to a coin that when exposed to air gradually either degrades or dissolves revealing the true surface? I know the holders are not air tight but are also not exactly letting copious amounts of air in either. Any ideas? Thank you![/QUOTE]