a piece of the cross and the nails. Socrates wrote that one nail was used to make a bridle and one was used to make the Helmet of Constantine. Two relics exist that have the form of a bridle and are claimed to be the bridle of Constantine: one in the apse of the Cathedral of Milan, and the other in the cathedral treasury of Carpentras Cathedral. The Iron Crown of Lombardy has been said to contain one of the nails; however, scientific analysis has shown that the crown contains no iron. The band that was supposed to have been formed from a nail is actually 99% silver. Nails venerated as those of Jesus’s crucifixion In the Basilica of Santa Croce in Gerusalemme in Rome (spike of a nail). In the Holy Lance of the German imperial regalia in the Hofburg Palace in Vienna. In the Iron Crown of Lombardy in the Cathedral of Monza. In the treasury of Trier Cathedral. In Bamberg Cathedral (middle part of a nail). In the form of a bridle, in the apse of the Cathedral of Milan (see Rito della Nivola). In the form of a bridle, in the cathedral treasury of Carpentras. In the monastery of San Nicolò l'Arena in Catania (head of a nail). In the cathedral of Colle di Val d'Elsa, near Siena. See also Nortia, an Etrusco-Roman goddess for whom the nail was an attribute Notes and references External links Holy Nails article in the Catholic Encyclopedia. Saints Alive! Relics of Constantine, and his mother, St. Helen Christian symbols Relics associated with Jesus Nail (fastener) Helena, mother of Constantine I