Philip I. A.D. 244-249. AR antoninianus (21.5 mm, 4.44 g, 6 h). Antioch mint, struck A.D. 244-245. IMP C M IVL PHILIPPVS P F AVG P M, radiate, draped and cuirassed bust of Philip I right / PAX FVNDATA CVM PERSIS, Pax standing left, holding branch and transverse scepter. RIC 69; RSC 113. EF, sharp strike but slightly off center, excellent portrait. Scarce.
Per Curtis Clay; "On this scarce early Eastern antoninianus, Philip commemorated the peace he patched up with the Persians after Gordian III's death during a campaign against them. P M on the obverse probably stands for not Pontifex, but Parthicus or Persicus Maximus, a victory title which is also found on some early inscriptions of the reign but was then apparently dropped."