Gallienus, AE Antoninianus, Rome. Sole Reign, 260-268 AD.

Obv: GALLIENVS AVG, radiate head right.
Rev: VICTORIA AET, Victory standing left, holding wreath and palm.
In left field: Z engraved as three short horizontal lines.
Göbl 589a, RIC V-1 (S), Rome 297 var (fieldmark)

Courtesy of Cameron of www.cerberuscoins.com, Jan 2011