Date:
1992P
I found this Lincoln cent with a curving Arc on the reverse that starts out at the first column and continues under STA of STATES.
I know the first inclination is to say PSD but the fairly deep and incuse Arc barely is visible on top of the devices. I'm finding it difficult to explain but where it is visible it is distorted and smooth from being struck by the dies.
I believe the arc (from the rim of another planchette?) was on the planchette before entering the Coining chamber and being struck by the dies.
I just hope my images are clear enough the show what I'm seeing in hand.
Thanks for looking. Cliff