[Bigdaddy]

I've had some junk wax stored in the garage for maybe 30+ years in coastal Virginia - think hot and humid in the summer.

The two biggest things I notice is that some cards with glossy finishes will stick together, though you can usually loosen them up. And the other thing is that if the edges of cards are white and uncoated, they can start to turn tan/brown. You won't notice it on an individual card, but if you stack them together and look at the edges, there is a definite toning.