Province Bithynia-Pontus
City Sinope 
Region Paphlagonia
Reign Gallienus (sole reign)
Obverse inscription IMP C GALLIENVS AVG
Obverse design radiate, draped and cuirassed bust of Gallienus, right, seen from front
Reverse inscription C I F S AN CCCXXX
Reverse design Sarapis reclining left on couch holding eagle on right; to left, star

 

Museum Archaeological Museum, Sinop (Turkey)
Inventory no. 13-2-80
Reference Casey 413 = Manisse 612 (year 325)
Diameter 27
Weight 13.52
Axis 9
Note date might be CCCXXX (as also suggested by the star symbol)