What type of error is this?

[bottlecap]

Almost looks like the rim of the coin is bent over then pressed into the coin. Would have to imagine this happened at the mint, maybe not, just not sure what to call this.

 

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[ajaj]

Looks to me like it was hit with a lawnmower.

aj

 

[l.cutler]

Damaged in some way, nothing in the minting process would do that.

 

[kingskid1611]

I think something hit it hard then smashed it again. I see this once in a while.

 

[bottlecap]

Ok thanks guys! I've come across a couple of these and didn't think it could be post mint but I've been wrong before!

 

[enamel7]

Definitely post mint damage!