1. The fabric of the clothing is deteriorating, with several holes. I also don't recognize this fabric as any commonly used today.
2. The doll appears to have been handmade, and one-of-a-kind, rather than made from a conventional pattern. If it IS made from a commercial pattern, it's not one I've seen around.
3. The hair is very unusually applied. It appears to have been crocheted, perhaps, and then sewn to the cloth head by hand; the doll's maker probably came up with the method on her own, as I've never seen hair done this way.
I haven't yet removed this doll's clothing, so I can't say yet whether she was sewn by hand or machine, but even if she WAS sewn by machine, sewing machines have been around since around the Civil War, so that would not necessarily preclude her being quite old.
I just now removed her cape, and I'm still not sure if it was handsewn or machine sewn, because it is very well-made--there are no seams visible. All are enclosed or covered. I'll keep removing clothing. I'm hoping I can wash her, but not sure what she is stuffed with, so that is iffy. I wish this doll could talk and tell me about herself. I can hope that the maker signed the doll somewhere, but usually this was not done, leaving us to wonder.
I will frinish undressing her, take more photos, and post again soon. Stay tuned.