A representation of the seal of the Pontifical University of Saint Thomas Aquinas.
I used the following images to create this image:

Meuble héraldique Clefs.svg by Zigeuner (talk · contribs)
Emblem of the Papacy.svg by Hautala (talk · contribs)
Mönchaltorf-blazon.svg by Gerhard Bräunlich (talk · contribs)
Meuble héraldique livre.svg by Bluebear2 (talk · contribs)
Escudo del marquesado de Iria Flavia.svg by Xavigivax (talk · contribs)
Own work
Alekjds