I found this 2014 Penny. From what I can tell it is probably gas bubbles or slight delamination of the clad. It says high heat can do this do the coin is in very good shape to have been in high heat. Is this a mint error? Are they worth keeping? Thanks
These coins are not clad, but rather they are copper-plated zinc. Your coin has plating blisters = zinc rot. Worth one cent, but spend it quickly before it turns to dust.
Inordinately fascinated by bits of metal with strange markings and figures
Not a Mint Error, just zinc bubbles/rot. If there is an error/problem to mention it would be poor choice of materials by The US Mint to create these new era cents (thin copper over zinc core), and the fact that nothing has been done nothing to correct the situation since 1982. There's got to be a better way.
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