Province Asia
Subprovince Conventus of Pergamum
City Pergamum 
Region Mysia
Reign Valerian and Gallienus
Obverse inscription ΑΥΤ Κ Π ΛΙΚ ΓΑΛΛΙΗΝΟϹ
Obverse design laureate, draped and cuirassed bust of Gallienus, right, seen from rear
Reverse inscription ΕΠΙ Ϲ ΑΥΡ ΔΑΜΑ ΑϹΙΑΡΧ, ΠΕΡΓΑΜΗΝΩΝ ΠΡΩΤΩΝ Γ ΝΕΩΚΟΡΩΝ
Reverse design two Kabeiroi (?) face-to-face holding ram’s head over altar

 

Museum British Museum, London (UK)
Inventory no. BNK,G.468
Reference BMC 346
Diameter 34
Weight 14.85
Axis 6
Note no altar?