Agree with Derek on the Sharpie fade. I have cards from 1980 I got IP in Sharpie that have been in boxes in card savers since. They are as bold as when I got them, even when some of the card savers have turned yellow.
They can fade on certain surfaces (baseballs, for example) but on cards and photos I've never seen spontaneous fading from Sharpie-brand ink when stored reasonably carefully.
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