A nice piece of a typologically more interesting issue.
Obverse: Bust of the Emperor with radial crown, armor and paludamentum to the right, surrounded by legend:
IMP PHILIPPVS AVG.
Reverse: 3-legion banners and legion eagle, surrounded by legend:
FIDESEXERCITVS
Silver, diameter 21.5 x 22 mm, weight 3.82 g, axis 12 h.