Environmental damage Discoloration and stains Fyi, since 1982 cents are a zinc silver-looking core with an 8 micron thin copper plating.
I also say Environmental Damage Not a Mint Error Coin troller 2121? Troller? Really? Bad name to choose for a coin forum. Welcome to CoinTalk!
Welcome to Coin Talk , I agree with @paddyman98 lose the troller part of your name. Trolling is viewed as not acceptable.