Insigna of the Roman catholic Church, witch is used by Pontifical basilicas, seminaries and institutes. This is not the emblem used during the vacancy of the Holy See (see: <a href="//commons.wikimedia.org/wiki/File:Sede_vacante.svg" title="File:Sede vacante.svg">File:Sede vacante.svg</a>).
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CC BY 2.5
<i>Dictionnaire de droit canonique</i>, Raoul Naz, Paris 1942