Commodus, AE41 Medallion, Rome. ca 191 AD.

M COMMODVS ANTONINVS PIVS FELIX AVG BRIT, Laureate, draped and 
cuirassed bust left.
VOTIS FELICIBVS, Harbor at Ostia with emperor standing at right, 
before a tripod, accompanied by a priest; lighthouse at right; in 
foreground, a sacrificed bull. At left, ship under sail with 
Serapis seated in stern; four other ships above and below.

Gnecchi 174; Cohen 993.

Courtesy of the Museum of Fine Arts, Boston.