English ballerina (1919-1991) widely regarded as one of the greatest classical ballet dancers of all time.  Photo signed (as "Margot"), inscribed and matted to a total size of 11.5 x 13.4 inches; original photograph stamped on verso by agent S. Hurok, The Royal Ballet.  Photo's size is 1.8 x 8.75 inches (visible window size), in excellent condition.