A copy of the front panel of a splendid sarcophagus known as the “dogmatic sarcophagus.” One of the earliest portrayals of the Trinity (the three persons on the left have the same face) is carved on it. The work was carried out at the time of the Trinitarian definition of the council of Nicaea (325). The original, discovered here after the fire of 1823, is now preserved in the Vatican Museum.