Quote:
Originally Posted by SetBuilder
Are slabs airtight?
I read an article that the Hall of Fame removes all cards from slabs because they're not sure what the long term effects are.
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True. The HOF if they put a card into any type of holder uses inert mylar. There is a site where you can buy products like this for cards, but I remember thinking they were very unconventional, in addition to being pretty pricey.
If you look at some of the older cards the Hall has in their collection and has used for images on calendars and the like - they used to write their collection numbers in pencil on the backs of many of the cards themselves. I would assume they don't still do this, but no way to know for sure.