Has Anyone ever seen one before? Partial clip?

This is not my coin. I repeat, not my coin. I'm just trying to help out a fellow collector.
Is this a partial clip and what could it be valued at? Calling all error experts and anyone out there.
Here it is. The only two pics so far. Waiting for more.

 

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IMO….the curvature does not look right. I don’t think any US denomination would have incomplete planchets punched with this degree of small curvature. Even our smallest denomination, the dime, has a broader curve to their planchets.

I think it is PMD. However, I am open to being proved wrong…Spark

 

I have one as well. I’ve never really looked into or considered what the problem is. It could be a form of a strike through. I’m just not sure but I do have have one. Mine has less of a curve than yours and it’s a copper cent.