2019 P Roosevelt Dime- Rim Error Question?

Hi guys,

I have this 2019 P Roosevelt Dime and noticed that on a portion of the reverse rim
(right side) there is copper. (See close up photo). What type of error would this be considered?

I usually see only a thin line of copper on the reeded edges and not on the rims.

Thanks very much.

 

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mis aligned die

 

Look like the collar, took some of the clad layer off ..

 

When the blank is punched from the metal sheet, some of it can smear as the punch pushes through the metal. Any excess bits of metal have a chance to get folded over during the upset milling process and show up in the rim when the coin is struck. This is more noticeable on newer coins since circulation removes it quickly. It doesn't add any value to the coin

 

Thanks. At least from now on I know what it is going on when I see copper on the rim of a dime. I had never seen this before so I was curious.

 

It's a MAD and quite normal.