FYI... I have bought some bulk air tights from time to time... Along with the AirTite brand name ones.
I recently picked up a Dansco Album for my
ASE's and when I took the
ASE's out of the bulk air tights, about a third of them were cracked or broken.
They were stored in a wood display box with a velvet/cloth lining with depressions for each coin, so the were not dropped or mishandled in any way - just age.
Some of those coins had tarnish on the rims...
They are pricey, but the AirTite brand may be the way to go... I'm not buying bulk ones anymore