Otacilia Severa, AE medallion, 36.5 mm, 37.15 g. Rome.

MARCIA OTACIL SEVERA AVG, draped and diademed bust right.
PIETAS AVGVSTORVM around, III ET II COS below, laureate and 
draped bust of Philip I facing laureate and draped bust of 
Philip II left.

Gnecchi II, 2; Cohen 4 var (rev legend); RIC 212 var (ditto and denomination)

Image from ANS Museum Notes, 1945.