xmetal lens

Hello All - It's been so many years since I have bought new x-metal lenses I do not remember if they had stickers on them. The images below are supposedly new juliet ruby lenses which have never been used. But I do not recall lenses having a sticker when I had purchase them in the past. Are...

I checked some of my NOS juliets and xx lenses today and I found a pair or two which started to peel/delaminate on the edge of the lens. I kept the lenses in a cool and dark place so I wonder what I did wrong.they have never been mounted.