Antique Porcelain Figurine / Plaque In Oval Gold Giltwood Frame

I recently inherited a large collection of figurines,plates and lamps and almost every one has a makers mark I've been able to look up and identify and date except this one do to the back being covered.Everything is at least 80 years old and several pieces are over 150 years old.There's figurines by Jacob Petit,Dresden,Meissen,Staffordshire,Royal Worcester,Royal Daulton and Windsor.There's also 2 plates made by Worcester Royal for Tiffany's of New York that I could date to the 1870's based on there marks.I mentioned these because my neighbor who has a lot of antique figurines said this could possibly have been made by Jacob Petit or depending on it's age a company called Sevres.This measures 17" x 14" and has 2 nails in back going through metal rings I've pictured.In trying to accuratly date this I took one of the nails out and went to Ace Hardware and the man there said this nail was well over 100 years old.I could only find a few framed porcelain figurines anywhere online to begin with and would like to see if anyone knows who could have made this.It's to old and to nice to take a chance on breaking this by taking the back off if that's even possible to find a makers mark.