First issue of the Wonderful Mosaics series, with a special convex shape. Contains 1 oz of. Obverse: Displays a profile portrait of Her Majesty Queen Elizabeth II. Reverse: Depicts the ceiling of the Archbasilica of St. Mintage of 999 coins. You will love this innovative 1 oz dome-shaped coin which features the ceiling of the Giovanni Laterano Church. Add this coin to your cart today. The Papal Archbasilica of St. John Lateran, commonly known as St. John Lateran’s Archbasilica, St. John Lateran’s Basilica, and The Lateran Basilica is the cathedral church of the Diocese of Rome and the official ecclesiastical seat of the Bishop of Rome, who is the Pope.