1975-D Lincoln mystery

While working on bronze cents of this date today I found 2 out of 22 that were keepers...both AU58 Red. However, while checking the others before sending them to the spend pile, I found one with an anomaly. Follows are the full images:


Now a medium shot of the reverse where the anomaly is.

The next shot is the highest magnification I can go with my scope, using its' internal ring light:

As you can see above the anomaly appears to be maybe a die crack but maybe not. The anomaly appears to be a surface imperfection of the planchette that, when struck, carried thru and remained affecting the lower T and the upper A... the crack in the A is not a die crack.
The next and final pic is one using a pen light shooting up underneath the scope from about one o'clock:


Just a final shot to give a different perspective.

Please comment with expertise. I think I'm on the right track here but I always honor facts that prove me wrong. I hope everyone enjoys the post...imo...Spark

 

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To me it looks like a planchet flaw.

 

Small lamination

 

Some sort of strange zig zag lamination possibly.
Maybe a minor strike through of a piece of thread or a metal shaving.
Most metal shavings come off in spirals. A spiral when pressed will turn into a zig zag…

 

I don't think this is a lamination. It looks to me like a planchet with a jagged void that became squeezed together when the coin was struck.

 

I thought strike through debris. Possibly a string off a rag

 

Notice on the obverse, directly behind the subject anomaly, there is a small lamination. It may be related to the reverse issue.

 

I would think no matter what caused it, it would be called a small lamination issue.
One think that sucks about these latter years of the 70's, there really aren't any attractive toners.

 

Appears to be struck-through, the damage extends across the devices. Since the coin is not MS, most likely it's just strange PMD. Odd things happen!

 

Interesting thought on the MS statement.

 

Thanks everyone for all the input.

I had thought of lamination and struck-thru so members who responded this way are okay in my book. I had also thought PMD as well, but the retention of cracking made me go with a surface problem.

The bottom line is I’m way okay with all of these as possibles cuz crazy things do happen @BadThad …and it really does look like a strike on a very minor lamination issue. I’ve put it in a flip as an example knowing it is NAV…Spark

 

Likely termites.

 

Love those guys