To me it appeared that the rim was squared to the fields. The devices seemed fairly crisp too. Although if it was a proof, they sure used worn dies because the lettering seems mushy, though i'm sure that was a contradiction in itself. I was more leaning to not a proof, but I'm too new to this to not throw it out there for others views...martha
Yeah... IMHO it just looks like a regular circulated penny... I feel as if to were proof the details would be much sharper (and IDK if this may be the case) shinier.
In 1916 Philly produced 600 matte proofs only https://en.numista.com/catalogue/pieces908.html and they look like this
