Quote:
Originally Posted by Sand Lot
I was scaning my graded cards yesterday and noticed a lot of them have wavey flips inside. I keep my cards in a fire proof safe in four sheet binders. They almost look like they came in contact with some moisture some way. I have seen some returned from PSA that were a little wavey but I did not think I had that many with wavey flips in the holders. I was wondering is this normal and nothing to worry about.
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I think the wavey flips are caused by moisture. I was also keeping my
graded cards in a Sentry fireproof safe, and noticed some of the paper
documents that I also had in the safe (birth certificate, etc) felt quite
damp. Turns out the fire retardant that they use can generate moisture.
One messageboard recommended keeping your documents (or slabs in
this case) inside ziploc baggies. Now I have my stacks of graded cards
double-bagged in ziploc baggies to prevent their exposure to mositure in
the safe.