It looks convincing but, this era of Lincolns was littered with Md, Ddd, etc. Clear full size pics would be great.
No. If what you're seeing was indeed a "spread", why isn't only showing on certain areas/parts of the individual letters? I cannot recall exactly what this is, but has been discussed before if you wish to search old threads. Hopefully someone more involved and familiar in this area could better explain. @Jim M perhaps? That said, I'd love to be wrong.
I would have have it checked out for sure. It seems to have the rite characteristics, I just can't tell for sure from the pictures. Good luck!
There are split serifs like I said from what I see it looks like a doubled die. submit it to wexler and hope for the best. I think it's good