Annual Proof Set Holders

i agree but then what is the objective. do you want the coins to be the same as when the mint made them or do you prefer toned coins. depending on the answer you would change the storage. i happen to like OGM lets see how that works out in IS shoe boxes

 

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Shoe box... funny.
I've seen some toning on older Proof sets... 30+ years old. My guess is that the 1999+ holders will be more reliable.
We'll see?