This is the image struck on the back of the Miraculous Medal. There are varying interpretations of the meaning of elements in the composition, from what I gather the Stars could be the Apostles, the 12 tribes of Israel or the stars as told by St. John in Revelations 12:1. The main element is the cross on a bar intertwined with an 'M'. The cross represents the cross of Our Lord and the 'M' the Blessed Virgin Mary. Under the "monogram" is the Sacred Heart of Jesus and the Immaculate Heart of Mary.