On April 23, 1953 the Vatican released a new set of definitives honoring the history of St. Peter's Basilica and the Popes who played a prominent role in its development. Depicts Popes St. Peter, Sylvester I, Julius II, Paul III, Sixtus V, Paul V, Urban VIII, Alexander VII, Pius VI and Pius XII. Scott #158-168 + E13-14, Mint Never Hinged.
