Maria Alekseevny Olsufyeva (1799-1878) by Eugène Pluchart, 1839
Signs of Russian Empresses are Russian ladies-in-waiting’s jewellery such as monogram of Empress or miniature portrait with blue moiré bow. The initials AM, as seen in the painting above, refer to Alexandra Feodorovna & Maria Feodorovna.
source: WikiCommons