RIC 1 10- Nero AV quinarius- 55-56 AD struck is the only one known in the existence of the Julio Claudian dynasty. For Nero’s reign which lasted from 54-68 AD and to only have this one under 14 years of his rule does raise red flags? the coin is definitely genuine, but could it have been a test coin by the die-engravers? even Caligula’s reign of less then 4 years has more on the Market? Was the denomination under Nero going to be started as a denomination? We know with is AR silver denarius became debased during his reign and as a donative in my opinion would have been too expensive and thus eliminated? But; we have this beautiful quinarius still available to look at ; at the British Museum Which acquired the specimen in 1867 from the Blacas collection Pliny brings up Nero’s monetary reform in 63-64 AD. With the building of the Domus Aurea and other extravagant things Nero wanted, the AV quinarius denominatio, just doesn’t seem to fit into his principate. It must be a test strike in my opinion that never came to fruition. After all his bronzes, Aureii and denarii are plentiful In comparison? These are my thoughts only. Joe Geranio Photo Collection- Julio Claudian Iconographic Association. 