Jelly for coins??

[jgas]

I am sure I saw it somewhere on other posts, but to make it a shortcut, can anyone tell me about "Jelly" and what types to use and where to get it for preserving coins. I have heard of aluminum jelly. Any help would be great. Thanks jgas

 

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[Tom_in_CA]

Naval Jelly works for nickels. Doesn't help on copper or silver though, only nickels.