Your cent is damaged. Someone scraped the copper plating especially around the rim to reveal the zinc underneath. It is not a mint error. Only worth 1 Cent
Suggestion: double check your photos before you post. It the photo isn't in focus, don't post it. Paddyman is correct, it is just a damaged cent. Welcome to CT BTW.
We can't tell with the photos you've posted, but I'd be willing to go out on a limb and say: No, just a PMD cent.
It doesn't have a different edge it has a damaged edge known as the rim or third side. The zinc core has been exposed. PMD as already stated.
I agree with all the above. A first step in understanding what you have is to weigh the coin. For example, a cent struck on a cupronickel alloy (nickel stock) should weigh 4.26g. See this table.
I agree that it is damaged. If he weighed the coin it might help convince him that your assessment is correct.
Not everyone has a gram scale handy.. It's like getting a bottle of wine and you want to open it but you don't necessarily always keep a corkscrew laying around.
You are correct! I am one who thinks a scale which weighs to 2 decimals in grams is a necessary requirement for a serious collector's toolbox, and I want to encourage anyone interested to acquire one. For $10 or so I think it is a valuable investment. Another useful tool is a set of calipers which measure to 2 decimals in mm.
The edge looks different because it is a dryer coin and the edge has been compressed. That wore through the copper plating at the same time.