Licinius I AE18. 308-324 AD. Rome.

Obv: LIC-INIVS AVG, helmeted, cuirassed bust right
Rev: VIRTV-S AVGG, campgate, 3 turrets, 7 layers, no doors, 

P-R across fields, 
Mintmark RS in ex.

RIC VII Rome 169, rated R4.

Contributed by Dane for "Ars-Aeterna / David Suter, Switzerland", June 2009