In the lower strata of sand of the Mithraeum, two coins of Commodus and one of his wife, Crispina, two of Diocletianus and one of Galerius, one of Constans and two of Valens were found.
A set of painted Latin hymns and ritual acclamations survives on the walls of the Mithraeum of S. Prisca, accompanying scenes of leones and the sacred meal.