Palatine Tiara

The Palatine Tiara is the most widely used Papal Tiara in the possession of the Vatican. It was donated to Pope Pius IX in 1877 by the Holy See's Palatine Guard to commemorate his jubilee as a bishop. It was last worn to date by Pope John XXIII.

Read more about Palatine Tiara:  Coronation Tiara For Some Popes, Design, "Vicarius Filii Dei" Myth, No Longer Worn, But Not Prohibited