Posted 01/03/2014 9:46 pm
Welcome to Coin Community, Ed14.
My advice would be - in addition to daniels' wise words, your sets retain far more value in their original containers - to encase groups of them in food-grade ziplock bags with the air pushed out. Oxidation can affect coins (and their paper envelopes); this can be a pleasing effect but it's a process, not a point state of being, and it will once started inevitably end in a displeasing patina on the coins. Doesn't happen all the time, but you won't know if the conditions are right for its' propagation until after it begins.
Remove oxygen from the equation. Work towards keeping them pristine. Almost all standard casing, even after-market, is not airtight.
My advice would be - in addition to daniels' wise words, your sets retain far more value in their original containers - to encase groups of them in food-grade ziplock bags with the air pushed out. Oxidation can affect coins (and their paper envelopes); this can be a pleasing effect but it's a process, not a point state of being, and it will once started inevitably end in a displeasing patina on the coins. Doesn't happen all the time, but you won't know if the conditions are right for its' propagation until after it begins.
Remove oxygen from the equation. Work towards keeping them pristine. Almost all standard casing, even after-market, is not airtight.
