The central door is the oldest. Pope Eugene IV commissioned the Florentine, Antonio Averulino, known as Filarete (1400-1469) to make the two bronze imposts which he completed in 1445. The six panels show: Jesus the Savior and Mary enthroned, the two centers of Christian piety, then as now; St. Paul with the sword, the weapon with which he was beheaded and whose blade is double-edged like God's words, and St. Peter, who is giving the keys to the kneeling Pope Eugene IV, are the two pillars of the Church of Rome. The two lowest panels show St. Paul sentenced by Nero and the martyrdom of St. Paul, who kneels as, blindfold, he the stroke of the sword that will take his life, and the martyrdom of St. Peter, dragged to the Vatican Hill where he is crucified. St. Paul then appears to Plautilla, to give her back the veil she had lent him to blindfold his eyes. The bas-reliefs between the framed panels show scenes from the pontificate of Eugene IV, and representatives at the Council of Ferrara-Florence, summoned in 1438 to reunite the Churches of the East and of the West.