Caracalla. AE. 198-217 AD. Odessos, Thrace. 

AVK MAV ANTWNINOC, laureate, draped, cuirassed bust right, seen from the back
ODHCCEITWN, Zeus, bare-headed, standing left, holding 
patera over burning altar, and cornucopiae. 

Note: This is neither the "Great God", nor Serapis, both
of whom are described as wearing a kalathos on the head.

Moushmov 1610; Mionnet Supp. II, 909.

With permission of Roma Numismatics, November, 2009