Philip II as Caesar, AR Antoninianus. AD 244-246. Hybrid with rev. type of Philip I. 23 mm, 4.88 g.

M IVL PHILIPPVS CAES, radiate, draped and cuirassed bust right.
PAX AETERNA, Pax standing left, holding branch and sceptre.

Eritrea hoard (2011), 138. Not in RIC. Belongs between RIC 214 and 215. (Obv: RIC 213-221 / Rev: RIC 227 or 231c) 

Image courtesy of Marguerite Spoerri Butcher and Andrea Casoli in SNR 91, (2012).