The Pardon Crucifix is a powerful sacramental that ranks among some of the most effective weapons against Satan - the Miraculous Medal and the St. Benedict Medal. It's unclear why a lot of Catholics aren't familiar with this powerful tool, but many are working to change that.
The front of the crucifix reads: "Jesus Nazarenus Rex Judaeorum" translating to "Jesus of Nazareth, the King of the Jews." The back of the crucifix has an image of Jesus' Sacred Heart along with the texts: "Father, forgive them" and "Behold this heart which has so loved men." Some Pardon Indulgence Crucifixes also may have both a Miraculous Medal and St. Benedict Medal added below the arms of Christ, but we've attached ours to the knotted rosary above.
In 1905, Pope Pius X declared indulgences upon the Pardon Crucifix.
In 1907, these indulgences were also approved in the pardon of the poor souls in Purgatory.
You can read the full declaration for more details and conditions applicable to the indulgences. You may receive a partial or plenary indulgence for the following: carrying or wearing the crucifix regularly, kissing the crucifix devoutly, saying particular prayers listed in the full declaration, on 5 feast days listed in the full declaration, and at the moment of death if you kiss the crucifix and ask God to pardon you and your neighbor.