Translation of legend abbreviations:

ΔIOKΛHTIANOC   CEB(ACTOC)

Diocletian Augustus

L H

year 8

EGYPT, Alexandria.  Diocletian

year 8, CE 291/2

tetradrachm, 17x19 mm, 8.5 gm

Obv:  ΔIOKΛHTIANOCCEB; laureate head right

Rev:   Zeus standing left holding patera and sceptre, eagle left at feet

Ref: Emmett 4087(8), R1