Geta, AE30 4 Assaria of Anchialus, Thrace. 15.26g. 

Obv: AVK P CEP GETAC, laureate, draped and cuirassed bust right.
Rev: OVLPIANWN AGXIALEWN, City gate, flanked by two battlemented
towers, surmounted by Poseidon advancing right, holding 
hippocamp and trident. 
Delta (value mark) at top left. 

Varbanov 462 (this coin); Strack 560.
Courtesy of Akropolis Ancient Coins, March 2011