Anonymous miniature painter (probably France, 18th/19th C.)

Anonymous miniature painter (probably France, 18th/19th C.)
gouache, oval portrait of a lady of the Empire, unsigned, verso illegible inscribtion, approx. 5.5x4cm (visible size), framed behind glass (7x5.5cm), paint carrier stained, unopened, frame with signs of age
Anonymer Miniaturmaler (wohl Frankreich, 18./19.Jh.)
Gouache, ovales Portrait einer Dame des Empire, unsign., verso unl. bez., ca. 5,5x4cm (Sichtmaß), hinter Glas gerahmt (7x5,5cm), Malträger fleckig, ungeöffnet, Rahmen mit Altersspuren