Under weight because of PMD?
Yes. Severe corrosion/environmental damage
You already should know that the answer to your question is a resounding YES!
There is so much PMD that any anomalies can be attributed to that.
That cent was never worth a second look.
Surprised it weighed that much!
parking lot find?
I agree with all the above
Yep... bad PMD.... looks like a parking lot special... or not so special... Cheers, RickO