From 1931, the coins of Vatican City have been struck at the Italian State Mint in Rome (there are also coins dated 1929 and 1930, which were struck in 1931 and backdated accordingly), and are legal tender in both Italy and San Marino, in addition to the Holy See. Initially, coins were produced in the denominations of 5 and 10 Centesimi (in bronze), 20 and 50 Centesimi, and 1 and 2 Lire in nickel, 5 and 10 Lire in silver, and 100 Lire in gold. All popes since Pius XI have had coin issues, including the brief reign of John Paul I, which is represented by a 1000-Lire silver piece struck posthumously.