1964 D Penny with possible staple?

[makbliss]

Going through my coins and just discovered this, curious as to thoughts on what it may be, rarity, and potential value.
Thank you

 

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[Blackfoot58]

I’d venture to guess that would be considered Mint Damage, as opposed to an Error Coin. I’ve not seen anything like it. Good luck!

 

[l.cutler]

It may be a delamination, but I can't say for sure from the pictures. A normal clear picture of the whole coin is best, screenshots from a microscope are too pixelated.