I had initially thought PMD (corrosion or acid etching - and that still might be the case), but seeing how intact LIBERTY remains above that void makes me wonder if this one did not indeed get struck on a seriously laminated, messed-up planchet. Could be. I'm no error/variety specialist, so I'll defer to those who are.
Those look like laminations. There are cuts on the coin, and a big one on the coat, just under the tie. Those cuts are the pmd.
Plus I never seen a lamination with all that black and green stuff all over it. Liberty looks like it melted kinda (to me)! Looks like there was acid on it, and while the acid was eating away, looks like they may have moved the penny and to me it looks like the liquid movement downward in liberty. When I look at a true lamination ( not saying this isn't) I see longer, straighter, sharper lines, I still see some laminations with fully intact devices, but usually the edge of the affected hole shouldn't have rounded edges. (Kind of think of it like this, when you rip apart a coke can, it's not gonna have round edges, they will be sharp. This is just my observation, justninformarion that may help you determine yourself
I thought it looked like lamination, but I wasn't sure on this one. I debated soaking it in acetone to clean it up some, but the grime really highlights the lamination.
It looks like it to me too and would be something I would have a question on too. I'm only looking at other laminations and don't see any similarities. I would try that though. Maybe there's something under all that crud
It could be some kind of acid damage or corrosion that happened prior to the strike, which would count as a minor error ("planchet flaw") rather than PMD. But I dunno for sure.
I love it when I can think like a detective. Haha I would wait for a few more responses just to be sure cause I still learning myself
This is the best I can get with my camera. Not sure if it's any better. If it was acid the word LIBERTY seems to be unaffected.
Looks to me like the acid also took its shape on the other side. They are in the same spot, and shapes resemble the obverse and the reverse of you outline both affected areas with your eyes. Straaaange things are happening on this coin. Lol.
After seeing the reverse, I'm thinking that it is chemical and/or environmental damage. FWIW, a dozen years ago or so, I watched a TV special about a collection service that contracted to gather the coins from the fountains in various malls and other buildings. The business had to clean the coins before they could be exchanged for cash. You might be surprised to learn about the methods they used and the chemicals that were employed to clean the coins. Suffice it to say that they definitely were not coin collectors. Chris
I remember that piece on the company that gathered and cleaned coins from wishing wells etc....yeah even putting 1000 ' s in a rock tumbler to get the crud off..... yeah seriously cleaned coins. And what he got a cut of the total amount to pay him for his services ?