2016D Roosevelt Dime What is this high/thin rim??

[stevewalkerny]

This Roosevelt Dime has a strange high rim, the edge is smooth and not ridged. It has some copper showing. Does anyone know what's up here; how this happened?

[occnumis2021]

pmd

a lot of these out there.

[MintErrors]

In my opinion, more than likely post mint damage. I would venture to say it looks like a dryer coin. A coin can get trapped in a dryer, spin, drop and bounce for hours and cause the metal to be a bit softer. It will flatten the reeding and cause the dime to have a higher rim. If you use a other dime, the coin with the issue might be a tad bit smaller diameter wise.