Gallienus Augustus 253-268AD AE Antoninianus RIC 311 Joint Reign

17.9x19.7mm, 2.75g
Mediolanum mint, AD 259
Radiate head right
IMP GALLIENVS P AVG
/ P M TR P VII COS
Gallienus, veiled, seated left on curule
chair, holding globe and sceptre.
MS in exergue
RSC 825, RIC 311, Goebl 1251f