Honest Abe in Profile, 19th Century Cast Iron Lincoln Relief

I've done a good bit of searching but can't find an exact likeness of this old iron Abe, or figure out exactly what purpose/context he was made for; I would guess it was once one half of a whole, with a flip side to match.  Whatever the case, definitely an old one, with great detail on the face, cast in relief, and with nice darkening to his cheek and brown and beard, in highest relief.

5 5/8" x 4 7/8" x 1/2". Good condition, nice patina, 19th century for sure.  Does not stand up on its own so needs to be propped or hung.