proof set help

hey guys, been a couple years

i have a few proof sets that my dad has given me for christmas over the past couple years. i’ve noticed a “bubble” of something inside of the case. is it moisture? do i need to crack the cases open? it’s in multiple, this is just an example. it might be air, but i’m just worried.
thanks.

 

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Can we see a better picture of it?

 

I see the discoloration of the orange paper. And hopefully the coins are sealed separately from it.

 

Looks like air but I would keep my eye on it to see if it changes shape.

 

That case is not going to add value to the coins. Break them out and put them in 2x2's.

Chris

 

I say leave them in the OGP for now. That bubble is not going to hurt anything, IMO.

 

I believe that is an "interference patter" from where the lining is touching the inside of the case.