CIMRM 339-340 - Altar. San Clemente, Rome
See also: CIMRM 338 Mithraeum; 339-340 Altar and inscription; 341 Cippus and inscription; 342 Fragments of torchbearers; 343 Sol; 344 Rock-birth; 345 "The good shepherd"; 346 Sacrificial bones; 347-348 Inscriptions.
On a personal visit in May 2013, I found that a plaster cast of the lower part of the altar was standing in the lower church. The following images were found here. They appear to be photographs of the plaster cast. The top of the cast was broken when I saw it, revealing chicken-wire across the top.2