Question Re "Bubbles" in NGC Slab

I received an NGC slab back from grading...it's a 2008 $25 Plat that graded PR70 Ultra Cameo.
The only thing that bothers me is that there are dark spots...that look like trapped air pockets or possible moisture on both sides of the slab.
Since NGC is going to be in Philly next week, should I ask them to reslab it (and should this be gratis on their part?)...or do you think the bubbles will disappear over time? If case it matters, these "bubbles" are clearly visible in NGC's verification photos...only slightly different in shape.
I just don't like the idea that moisture might be trapped against the coin's surface.
Thoughts...comments?
The only thing that bothers me is that there are dark spots...that look like trapped air pockets or possible moisture on both sides of the slab.
Since NGC is going to be in Philly next week, should I ask them to reslab it (and should this be gratis on their part?)...or do you think the bubbles will disappear over time? If case it matters, these "bubbles" are clearly visible in NGC's verification photos...only slightly different in shape.
I just don't like the idea that moisture might be trapped against the coin's surface.
Thoughts...comments?
0
Comments
"Keep your malarkey filter in good operating order" -Walter Breen
Definitely suspended inside the case...as the bubbles/dark marks have shifted somewhat since the verification photos were taken.
And they only appear to be on the blank white field area of the slab, not near the actual coin surface.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
P.S. Call NGC customer service tell them your problem and walla, your coin gets a new slab free..
If so, I have several NGC slabs with this malady. So far after several years, the coins have not changed in the holder, but they are not PR70's either.
I would be interested in any other feedback on this issue. Also, you might try this question on the NGC boards.
“In matters of style, swim with the current; in matters of principle, stand like a rock." - Thomas Jefferson
My digital cameo album 1950-64 Cameos - take a look!
Yes...when you press down, they seem to flex and flow a bit. But I still can't tell if its air or moisture?
Since I think platinum is basically immune to practically everything, I'm not too concerned. But it is distracting...especially with an essentially flawless coin inside.