This is our first Centenionalis. It was minted by the emperor Magnentius who ruled from 350-353 AD. The obverse shows the emperor facing right with the legend“IM.CAE.MAGNENTIVS AVG”.
The reverse legend reads “FELICITAS REIPVBICE” and shows Magnentius standing left holding victory and a laburnum. In the Exergue is TRP. It is Sear 4018