I dunno, Marty... The casting seems ok. Finish is less rough than some modern skillets but not a silky smooth finish either. Lines are straight and not crude looking. It has a matte silver finish of some sort that feels and looks like aluminum on top of iron, if there is such a thing. The numbers are clean and not smudged or distorted, as you point out. I feel fairly confident that if it is a copy it isn't wasn't cast using an existing pan as the pattern, although I'm getting a bit beyond my level on that.
The closest thing I could find to it in the books is a nearly-identical-looking Wagner #20 pan, which presents a minor problem, this being a #30 pan and all....
Is there a PDF here of the Lodge catalog that I can look at?