Is this a mint error?

So, is this a mint error? Inside zero is a triangular shape that should not be there. And I know, some moron touched this uncirculated coin with some greasy fingers.
Coinsof1984@martinb6830 on twitter
0
So, is this a mint error? Inside zero is a triangular shape that should not be there. And I know, some moron touched this uncirculated coin with some greasy fingers.
Coinsof1984@martinb6830 on twitter
Comments
I would think so. Pictures are great for the study.
The reeds look like a music box cylinder for the music keys.
Cool. TKY
Looks like a minor die clash
Good spot although as per Top this is a relatively mild one...
Well, just Love coins, period.
Looks like a die clash.