I know less than nothing on dolls. But I'm laid up and have nothing to do so researching this might be fun....plus added knowledge on a subject is never a bad thing
So.....
Is it just the face that seems porcelain or arms too?
Is there a full body and is it the same material as the face and/or arms?
And do her hands have fingernails etched in or are they smooth?
Grab a magnifying glass. And search entire body for a slight engraving. Read that some are marked ever so slightly. Maybe just a circle or a letter. And could be in an area that it looks like a manufacturing error or something.
Do the clothes have a tag anywhere. Doesn't have to have writing, just a lip of material that looks like tag.
And look up inside, all around, the doll and box for an inspection number. Little sticker or piece of paper.
No promises. I'm just bored and stuck in bed/house for while.