Michelangelo also uses a key to indicate Peter in the Last Judgment . For a good detail look at our page Saints at the Last Judgment . G.G.Sill reports that there is a Papal Cross which is a Latin Cross with three unequal cross pieces. Sill, Symbolism in Christian Art , p. 31. The fine art images are from Christus Rex .
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No other use of any part of this page is intended or permitted. Christian Symbolism Catholic Teaching and Tradition on Religious Art.