Me too. And that doesn't look like a MFC cut off. Bottom left pic = looks like it could be a melted pontil (without very much carbon schmutz), which would nudge it over towards J. H. Leighton, maybe either Navarre or Barberton. Most of the Navarres I've seen have been purple or a dark color that reads as black, and the lighter-colored ones always seem to be Barberton.
Not gonna die on that hill, though.