Air-Tites For The TPG's

I don't understand why some of the TPG's DO NOT use Air-Tites or similiar technology for their slabs. Sonically sealed inert plastics sounds nice and all, but it many are not perfectly sealed from air.

I read one post where it was suggested to breathe on the edge of a slab and if the coin "fogs over", it is not air tight. Yeah, like I want my breath all over my coins. Nice test for your coins, not going to happen to mine.

I heard that NGC is now totally sealing their slabs from gases, though their slabs still look the same to me. What say you?

Between Ait-tites and the Intercept Shiled, it seems that both are highly respected in coin preservation. Intercept Shields are only found in ICG graded coins for an additional $3 per coin. In my opinion, this protection is well worth it and goes back to the thread: how much to you spend on supplies?

I am very suprised that PCGS has not looked into these further...especially with the prices they realize. Makes sense, doesn't it? Air-Tites in a PCGS slab?

Let's take it a step further as sometimes a coin may tone/tarnish/discolor after it is slabbed. I recenlty saw some Silver American Eagle Proofs graded PR69DCAM in PCGS holders that have toned!?! Opps!! Did somebody accidentially breathe on the coin as they were sonically sealing it? Maybe the coin should be slabbed in an inert gas (Argon comes to mind) so that our precious coin is free from oxygen, sulfides, etc., that can cause havoc on our collection.

Think about it and let's put grading issues aside, what would be your idea slab and what would you want labeled on it other than the year, mint mark, grade, certification number, and denomination? I particularly don't care for PCI coins, but I like that they put mintage numbers on their slabs. That way I can say, "I am one of _____!"