[Opera] Callas, Maria. (1923–1977) Signed "Norma" PhotographSigned original David Sim photograph of Callas in the historic 1957 Covent Garden (John Pritchard) production of Bellini's "Norma." Boldly signed and inscribed and dated 1957 in blue ink across the image, adding "Norma. Memories and affection." 6. 5 x 8. 5 inches. Pristine and quite unusual this size. The audience went so hysterical at the "Mira o Norma" duet with Stignani that Pritchard was forced to give an encore the first at Covent Garden in