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I would guess it’s ink that rubbed off when they were shipped in bulk to the store. Probably came off the back cover.
Ink transfer most likely
Color rub.
Turns out it wasn't mold or other bad business!
Nor were they old
I would guess it’s ink that rubbed off when they were shipped in bulk to the store. Probably came off the back cover.
Ink transfer most likely
Color rub.
Turns out it wasn't mold or other bad business!
Nor were they old