Constantius II, AE2, Victory Galley, Rome Mint, Unlisted ? 

Obv: DN CONSTANTIVS PF AVG, Pearl Diademed, draped and cuirassed bust right 
Rev: FEL TEMP REPARATIO, Emperor standing left on galley
holding labarum and phoenix on globe, Victory seated at
the helm. A in field left 
RP in exergue

Seems to be unlisted in RIC or on any online database that I can find. 

RIC 148 var (no A behind bust)

Courtesy of rustyromans on vcoins.
August 2009