How do you keep a coin from toning?
I got some presidential dollars for my daughters first birthday and put them in some air tights. I want to know how to keep them from toning like my silver bullion mothers day coin did. Thanks for any suggestions.
How old should she be when I give them to her?
Air-tights are a good first step. I’d make sure you kept the coins some place dry, not too warm if you can, and someplace where they wouldn’t be exposed to any harmful …