@Joy Matherne Please show a picture of the edge also. Thanks. What is the other coin on the upper left corner? Looks strange.
That looks like something took a bite out of it. But that's an odd shape for a curved clip, that's not a curved clip. Curved clips are curved uniformly. And there are curved clips and straight clips, and that's it.
I am quite sure you coin has been altered to look like an error coin. A Clipped Planchet. If your coin was made at the mint it would not have full strike details at the edge of the Clipped area.
I believe the 1968-D Cent clip is genuine. There is a soft rim 'Blakeseley Effect' opposite the clip, and although I don't see any metal flow at the clip end points, the double rim going to the left and right of the clip is also sometimes a characteristic of a striking of a large size clipped planchet. I'd like to see the other side of the coin, but there's a darn good chance it is real, imo.
That photo doesn't help - too dark, too far away. I can't see the inside of the clip well enough. Try another edge shot, but much closer up, so we can see the 'cut and tear' marks, which will be on any genuine curved clip - I don't see them on the edge shot above, so until I see the inside of the clip area better, my first comment that it might be genuine will be tempered by that....edge view please. ....and a full shot of the reverse of the coin too......
How does a clipped planchet make it through the upsetting machine without getting stuck or jamming the machine?
What about these I will soon be getting a micro to help take better pictures sorry if these don't work I'll try again and I did the black and white one so the middle showed better. Hope it helps