Reference
Note:
Assigned to Valerian and Gallienus joint reign (before capture of Valerian); Specimen has obverse mint-mark -/-//•
Reference
Note:
Assigned to Gallienus sole reign (between capture of Valerian and usurpation of Macrianus/Quietus); Attributed to 'Second Eastern Mint'; Specimen has obverse mint-mark -/-//•; Reverse left figure is holding short baton, not long vertical spear (reverse type Emperor and Jupiter 1a, not Emperor and Jupiter 1)
Reference
Note:
Assigned to Gallienus sole reign (between capture of Valerian and usurpation of Macrianus/Quietus); Attributed to mint of Samosata; for dating see p.134-135; Specimen has obverse mint-mark -/-//•; Göbl does not cite example of this type
Reference
OCRE : http://numismatics.org/ocre/id/ric.5.gall(1).440.1