Recently, I happened to be looking for marks from the "M�nchner Werkst�tten f�r Keramic und Kunst," when I spotted the same marking that I asked about identifying earlier. Since we were unfamiliar with it, I thought this would be of interest ... that is, at least to Mikee and me, heh ...
Here's a so-so photo of that marking, not the greatest but good enough for our purposes. The marks were attributed the firm of Villeroy & Boch, or Mettlach.
I haven't been able to verify this yet, but at least we have someplace to start - same oil lamp logo, gesetzlich gesch�tzt, patent-mark and pattern number. I'd like to find this listed again elsewhere to substantiate the identification.
In the meantime, good collecting to one and all.
Best!
Bill