Issued by Vatican City in 1959, this pair of stamps marks the 30th anniversary of the Patti Lateranensi (Lateran Treaty) of 1929, which established Vatican City as an independent state. The stamps depict Pope Pius XI, who signed the treaty with Italy’s government, formally resolving the “Roman Question.” The 30 Lire brown and 100 Lire blue denominations feature classic Vatican design typography and were printed by the State Printing Works in Rome. These stamps are significant symbols of Vatican sovereignty and Church history, making them prized pieces in ecclesiastical and historical philately.