Signed photograph postcard of the important Swedish Wagnerian soprano as the Mona Lisa, holding an armful of flowers and with the requisite enigmatic smile. Ljunberg starred in the opera by Max von Schillings at the Staatsoper Berlin. She has boldly signed and inscribed the postcard across the image and dated 1931. In very fine condition. 3.5 x 5.5 inches (9 x 13.8 cm).