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Tim JamesIn modern and early printing, any print even with UV protection, magenta is the first color to go, but it will still fade just more slowly. Museum conservators keep direct light off artwork, and in my opinion, cards should be treated the same way. The key is the type of plastic that is used. Just remember, every plastic is a petroleum product, and heat will always be a factor, and is a catalyst for the degradation of the product over time. Heat can also cause the plastic to gas. I've seen a number of slabbed cards with what seems to be loose plastic outside the boundary of the card. Am I mistaken in this observation ?