Philip I Antoninianus "Late Roma" 

 
Philip I "the Arab" AD 244-249 Silver Antoninianus 
Obv: IMP PHILIPPVS AVG - Radiate bust right, draped and 
cuirassed. Rev: ROMAE AETERNAE - Roma sitting left holding 
Victory and scepter; at feet left, an altar. Rome mint: AD 
247 (7th Issue- 6th Officina) = RIC IViii, 65, page 75 - 
Cohen 171