2016 us dime possible planchette error 0

[David W Blackburn]

It has no grooves on edge and has over 50% copper edge. It is Philadelphia mint. I chose another 2016 dime for comparison. The weight of regular dime on my scale. 2.26 . Dime in question weight is 2.27. Please let me know.

Edited April 18, 2020 by David W Blackburn
Put wrong year by accident. Damn I’m such a newbie I can’t stand it!!!

[Greenstang]

That is the copper core showing through. Looks like someone has ground or buffed off the ridges. The only time you can have a dime without the ridges is if it was struck out of collar.

[kbbpll]

Would be helpful to see the whole coin next to a normal dime, front and back.