Antique French Portrait of a Dignitary, c.1810-25 Applique Empire Frame, Exceptional!

Housed in the original opulent appliqué frame which dates c.1810-30, we know from that and our sitter's clothing the period of history from which his eyes engage us. The painting is surely of an important French gentleman, but we have nothing with the painting to tell us whom. I have not taken all mats/painting, frame apart to search within for more information, and sometimes a signature can be thus found. Or an identification of the subject of the portrait. I will leave that to his next owner.  What I can tell you is this artist is fully adept and quite exceptionally gifted in miniature or sized down portraiture. While there's attention enough to his diamond cravat pin, the fold of his black cravat, and the lay of his watch Chaim, it's the eyes, brow, mouth and handsome dignity of his graying hair which will hold your attention.  When I purchased this one, I had some hopes that the scumble upper left against the blue drapery, a white something, might turn out to be a signature, but it