OK, I'll try again. The sealed slab will restrict the refreshing of any oxygen trapped before the slabbing and some of the oxygen might react...
In all fairness to the OP, they aren't intending to bury the coins, they are intending to make up sets for folks who might want them many moons...
A trick question...right...keep it away from oxygen 1) seal that sucker up 2) put stuff around it that will react with oxygen.
It's in the mail...of course I will respect you in the morning...
Thought we were talking about when they WERE legal tender.
I can see displaced metal on the "T", seems to be a scratch, probably caused by a staple.
On CoinTalk...surely you jest!
Chev-ro-ray...my wife is Japanese.
Separate names with a comma.
