1973 D Lincoln Penny Error.

It is the "Recurring Die Subsidence Error". There are several different dies, so I personally would not consider it rare. I suppose you could try to collect as many different ones as possible.

LINK https://www.error-ref.com/recurring...dence-error/



ADDED: After I thought about what I said and how I stated it, I felt maybe a follow up answer might be good. I suppose what I should have said, the error itself would probably not be considered rare. I guess that the individual dies could possibly be. Maybe Mike Diamond would have time to weigh in on this.

to CCF
makecents called this one correctly.

Makecents calls it.

Thanks for the info. Yes the part I'm talking about is on the left side of the memorial where it looks like one of the towers has fallen over or a tree just appeared out of nowhere inside the memorial. But thanks again for the insight.