XII. During the reign of Pope Pius (1939–1958), the Vatican issued many different coins. These coins included: Denarius - The denarius was the smallest denomination of the Vatican. it was minted from silver and bore the portraits of St. Peter and St. Paul.Liretta - The liretta was the most common denomination in the Vatican. minted from silver, and XII. It bore the portrait of Pope Piusz. Vatican gold - Vatican gold was the largest denomination of the Vatican. minted from gold, and XII. It bore the portrait of Pope Piusz. In addition to these coins, the Vatican also issued commemorative coins. special events, such as XII. The accession of Pope Pius and the proclamation of the dogma of the Immaculate Conception. 1939 Holy Year of Saints Peter and Paul - This coin was issued to commemorate the holy year of the apostles Saints Peter and Paul. The coin is decorated with the image of the apostles St. Peter and St. Paul..XII. Among the coins minted during the papacy of Piusz, the most famous is the Holy Year medal issued in 1950. This coin was minted in honor of the 1950 Holy Year and featured the coat of arms of the Vatican on the reverse. The medal is made of silver and gold. 1958 XII. Death of Pope Pius - This coin was minted by XII. Issued to commemorate the death of Pope Pius. The coin XII. Decorated with the portrait of Pope Piusz.. XII. Coins minted during the reign of Pope Pius are an important part of the history of the Catholic Church and the Vatican.