RIC V Gallienus (joint reign) 321
Denomination: antoninianus
Material: ar
Authority: valerian
Mint: mediolanum
Manufacture: struck
Date: 0259 to 0259
Obverse legend: GALLIENVS AVG
Obverse portrait: gallienus
Reverse legend: LEG I ITAL VII P VII F
Reverse: Hippocamp, right