The Front of the Crucifix:
Above the cruciform figure, the familiar I.N.R.I. has been inscribed with the words "Jesus Nazarenus Rex Judaeorum. "" Latin uses I instead of the English J, and V instead of U (Iesvs Nazarenvs Rex Ivdaeorvm). The English translation is "Jesus of Nazareth, the King of the Jews." .

The Reverse of the Crucifix:
On the transverse arms are the words, "Father, forgive them.". On the vertical beam of the Cross are the words, "Behold this heart which has so loved men.". An image of The Sacred Heart of Jesus is shown in the center.

Definition of Indulgence

The word indulgence originally meant kindness or favor. In Latin it meant the remission of a tax or debt. Under Roman law it was used to express release from captivity or punishment. In this instance, an indulgence is given to remit the temporal punishment of sin that has been forgiven.

These indulgences have been declared upon the Pardon Crucifix by Pope St. Pius X in 1905, and have been approved in the pardon of the living and the souls in Purgatory in 1907. The lengths of the indulgences were repealed in the new Enchiridion, and the indulgences were granted to remit the guilt of the sin committed:

1. Whoever carries on his person the Pardon Crucifix, may thereby gain an indulgence.

2. For devoutly kissing the Crucifix, an indulgence is gained.

3. Whoever says one of the following invocations before this crucifix may gain each time an indulgence: "Our Father who art in heaven, forgive us our trespasses as we forgive those who trespass against us." "I beg the Blessed Virgin Mary to pray to the Lord our God for me."

4. Whoever, habitually devout to this Crucifix, will fulfill the necessary conditions of Confession and Holy Communion, may gain a Plenary Indulgence on the following feasts: On the feasts of the Five Wounds of our Lord, the Invention of the Holy Cross, the Exaltation of the Holy Cross, the Immaculate Conception, and the Seven Sorrows (Dolors) of the Blessed Virgin Mary.

5. Whoever, at the moment of death, fortified with the Sacraments of the Church, or contrite of heart, in the supposition of being unable to receive them, will kiss this Crucifix and ask pardon of God for his sins, and pardon his neighbor, will gain a Plenary Indulgence.

Definitions courtesy of newadvent.org