The dedicator of this altar was a slave in the service of a high official, the prefect Gaius Antonius Rufus, known from other inscriptions.
TNMM402 – CIMRM 1846
I(nvicto) M(ithrae) / spelaeum cum / omne impen/sa Hermes C(aii) / Antoni(i) Rufi / praef(ecti) veh(iculorum) et / cond(uctoris) p(ublici) p(ortorii)/ ser(vus) vilic(us) Fortu/nat(us or -ianus) fecit.