Thought this looked like an N-3 so picked it up this am. https://www.ebay.com/itm/1851-1C-BN...=true&nordt=true&rt=nc&_trksid=p2047675.l2557
Verdigris on the reverse could be an issue. Looks as if someone tried to clean it off. Posting the photos, because sometimes they disappear.
The link took me to an 1853 auction. I also cannot see the 1 protruding from the right side of the one maybe better pictures. Good luck.
If you click the little box on the left above the 1853 coin, you will see the 1851, scroll down, that I already posted.