In 1830 Catherine was blessed with the apparitions of Mary Immaculate to which we owe the Miraculous Medal. The first apparition came one the eve of the feast of St. Vincent, July 19. The mother superior had given each of the novices a piece of cloth from the holy founder's surplice. Because of her extreme love, Catherine split her piece down the middle, swallowing half and placing the rest in her prayer book. She earnestly prayed to St. Vincent that she might, with her own eyes, see the Mother of God.
That night, a beautiful child awoke her from her sleep, saying: "Sister Labouré, come to the chapel; the Blessed Virgin is waiting for you." When Catherine went to the chapel, she found it ablaze with lights as if prepared for Midnight Mass. Quietly, she knelt at the Communion rail, and suddenly heard the rustle of a silk dress. The Blessed Virgin, in a blaze of glory, sat in a chair like that of Saint Anne's.
Catherine rose, then went over and knelt, resting her hands in the Virgin's lap, and felt the Virgin's arms around her, as she said: "God wishes to charge you with a mission. You will be contradicted, but do not fear; you will have the grace. Tell your spiritual director all that passes within you. Times are evil in France and in the world."
A pained expression crossed the Virgin's face. "Come to the foot of the altar. Graces will be shed on all, great and little, especially upon those who seek them. Another community of sisters will join the Rue du Bac community. The community will become large; you will have the protection of God and Saint Vincent; I will always have my eyes upon you." (This prediction was fulfilled when, in 1849, Fr. Etienne received Saint Elizabeth Seton's sisters of Emmitsburg, MD, into the Paris community. Mother Seton's sisters became the foundation stone of the Sisters of Charity in the United States.)
Then, like a fading shadow, Our Lady was gone.
Four months passed until Our Lady returned to Rue du Bac. Here are Catherine's own words describing the apparition:
";On the 27th of November, 1830 ... while making my meditation in profound silence ... I seemed to hear on the right hand side of the sanctuary something like the rustling of a silk dress. Glancing in that direction, I perceived the Blessed Virgin standing near St. Joseph's picture. Her height was medium and Her countenance, indescribably beautiful. She was dressed in a robe the color of the dawn, high-necked, with plain sleeves. Her head was covered with a white veil, which floated over Her shoulders down to her feet. Her feet rested upon a globe, or rather one half of a globe, for that was all that could be seen. Her hands which were on a level with Her waist, held in an easy manner another globe, a figure of the world. Her eyes were raised to Heaven, and Her countenance beamed with light as She offered the globe to Our Lord.
"As I was busy contemplating Her, the Blessed Virgin fixed Her eyes upon me, and a voice said in the depths of my heart: 'This globe which you see represents the whole world, especially France, and each person in particular.'
"There now formed around the Blessed Virgin a frame rather oval in shape on which were written in letters of gold these words: 'O Mary conceived without sin, pray for us who have recourse to Thee.' Then a voice said to me: 'Have a medal struck upon this model. All those who wear it, when it is blessed, will receive great graces especially if they wear it round the neck. Those who repeat this prayer with devotion will be in a special manner under the protection of the Mother of God. Graces will be abundantly bestowed upon those who have confidence.'
"At the same instant, the oval frame seemed to turn around. Then I saw on the back of it the letter 'M', surmounted by a cross, with a crossbar beneath it, and under the monogram of the name of Mary, the Holy Hearts of Jesus and of His Mother; the first surrounded by a crown of thorns and the second transpierced by a sword. I was anxious to know what words must be placed on the reverse side of the medal and after many prayers, one day in meditation I seemed to hear a voice which said to me: 'The 'M' with the Cross and the two Hearts tell enough.'"
The Mother of God instructed Catherine that she was to go to her spiritual director, Father Aladel, about the apparitions. At first he did not believe Catherine, but, after two years, approached the Bishop of Paris with the story of the events that had taken place at Rue du Bac. Our Blessed Mother had chosen well Her time for the apparitions as the Bishop at that period was an ardent devotee of the Immaculate Conception. He said that the Medal was in complete conformity with the Church's doctrine on the role of Our Lady and had no objections to having the medals struck at once. The Bishop even asked to be sent some of the first.
Immediately upon receiving them, he put one in his pocket and went to visit Monseigneur de Pradt, former chaplain to Napoleon and unlawful Archbishop of Mechlin who had accepted his office from the hands of the Emperor and now lay dying, defiant and unreconciled to the Church. The sick man refused to abjure his errors and the Bishop of Paris withdrew in defeat. He had not left the house when the dying man suddenly called him back, made his peace with the Church and gently passed away in the arms of the Archbishop, who was filled with a holy joy.
The original order of 20,000 medals proved to be but a small start. The new medals began to pour from the presses in streams inundating France and the rest of the world beyond. By the time of St. Catherine's death in 1876, over a billion medals had been distributed in many lands. This sacrament from Heaven was at first called simply the Medal of the Immaculate Conception, but began to be known as the Miraculous Medal due to the unprecedented number of miracles, conversions, cures, and acts of protection attributed to Our Lady's intercession for those who wore it.
The most remarkable miracle was the conversion of Alphonse Ratisbonne, a wealthy Jewish banker and lawyer and also a blasphemer and hater of Catholicism, in 1841. A Catholic friend gave him a medal, daring him to wear it and say a Memorare. Not long after, he went to a church to make funeral arrangements for a friend. There he saw a vision of Mary as on the Miraculous Medal. This converted him on the spot and he immediately begged for Baptism. Afterwards, he became a priest and spent 30 years laboring in the Holy Land as a missionary to his own people.
We offer a brochure on St. Catherine Labouré and the Miraculous Medal which the above is taken from and also the booklet Mary's Miraculous Medal.