There was an apparition of Mary in Härtelwald near Marpingen on the evening of 3 July 1876, which has led to a constant stream of pilgrims visiting the area to this very day. The Mother of God appears before three young girls with the baby Jesus in her arms. She appeared before the children again during the day and answered the question of who she was, "Mary Immaculate". The prayer card, which is lovingly framed with lacy paper, shows a stylised interpretation of the apparition. A prayer to Mary is printed on the back.