Empress of Austria and Queen of Hungary as wife of Emperor Franz Joseph I, known widely as 'Sisi,' remembered for her obsessive concern with her health and beauty (1837-1898); she was assassinated by an Italian anarchist. Hand-addressed envelope by the empress, 4.5 x 3.5, addressed by Elisabeth to her husband, the Austrian Emperor Franz Joseph in Vienna. Postmarked at Buda in 1888. Reverse is marked in gilt lettering, "Elisabeth," and retains the original golden wax seal. In fine condition, with some slight irregular toning to the back.