The pits and holes that develop in the surface of a copper plated zinc 1 cent coin. Once the zinc core of a cent is exposed to the elements is starts to break down or rot. These holes are sometimes thought to be an error in the minting process, but it just damage.
That penny you're trying to sell on eBay isn't an error, it's just covered in Zinc Rot!
Beards like that from jack "cuck" murphy where left and right sides are white and the middle part is normal colored.
Tongue can't reach left and right side to clean the zinc leftover up, which he got from eating out his gf after she met Matt from Tinder.
Have you seen Jack "cuck" Murphy? He got a nice zinc beard.
Guess Jack "cuck" Murphy came up with the idea of a zinc beard while he got a dildo stuffed in his ass, like when he did porn or got rammed by another guy.