Dupondius - Vespasian FIDES PVBLICA S C, Fides

Vespasian's repeated use of FIDES PVBLICA on his coinage was deliberate political messaging: having seized power through civil war in 69 AD — the Year of the Four Emperors — he spent much of his reign working to restore confidence in the imperial institution itself. The orichalcum dupondius, struck for the aes coinage, was the denomination most likely to pass through ordinary hands in daily transactions, making it the logical vehicle for that message.

RIC II.1 1210 dates to the tenth and final year of his reign, just before his death in June 79 AD.