Johannes, 423-425 AD. Rome, AE11mm; 0.7g. 

Obv: DN IOHANN-ES PF AVG, pearl diademed, draped, cuirassed bust right.
Rev: SALVS REI-PVBLICAE, Victory advancing left, trophy over
shoulder, dragging captive behind her.
Left field: chi-rho over P

RIC X 1920 or 1923, depending on the mintmark PRM or RMP.

These coins for Johannes were only struck in Rome and this 
obverse break is listed for RIC X 1920 or 1923, so this coin 
must be one of these two types.