I'd answer this one, but your images are on the duplicate thread. So, I'm torn between the two. Chris
Here I snipped what you have been told. I have told you in the past also about duplicate threads and you said that you created only one. How do you create them?
I believe you.. but somehow it gets created 2 times. Back to the Cent. If you say it's under weight it could be a Rolled Thin Planchet
I don't think this coin has a loss of weight due to a rolled thin planet. This coin looks like it was affected by acid.