[Exlibris of the Collegii Salvatoris]

Exlibris are labels or stamps that mark the ownership or provenance of a book, usually placed on the front or back cover of these.
This belongs to the Coleegii Salvatoris, created by the order of the Society of Jesus, which has been in operation since 1868 to date. Observing its symbology, we find two wolves holding the monogram -symbol formed by intertwined letters as an abbreviation- of the name of Jesus, used in the shields and emblems of this Christian order.