Septimius Severus, AE 23 of Gytheion, Laconia.

LOY CEP CEYHROC, laureate head right.
GYQEATWN, Poseidon standing left, holding dolphin and trident.

Paris Y28460.16.
Very rare, not in Pausanias, BCD, Mionnet, Gress etc.

Contributed by Michael K8 of the Forum Ancient Coins, Aug. 2021.