This altar to Deo Invicto was found during the excavation of the Monastero Delle Benedettine di Santa Grata in Bergamo, with a bronze calf’s head on top.
Franz Cumont bought this relief of Mithras as a bullkiller from a dealer who claimed to have found it in a vineyard near the church of Saint Pancrace, in Rome.
This is one of the three reliefs of Mithras as a bullkiller from the Villa Borghese collection that belong to the Louvre museum, now in the Louvre Abu Dhabi.