the date on the back indicates it was intended to run in a newspaper during August, 1955.
the retouching and use of opaque paint to silhouette and highlight the photo indicate the 'design' addition of what would seem to be the arm of a male dancer, possibly Sugar Plum's cavalier.
this documents an era when the stage designs were those of Horace Armistead, which are unknown to me, first hand, and when the pas de deux was not yet rearranged to have the ballerina's 'celesta solo' occur earlier in the act and apart from the pas de deux.
the headpiece looks esp. pretty and seemingly different from the one worn by LeClercq when she danced Sugar Plum around this time, in this same tutu.