Septimius Severus AD 193-211. Denarius 19mm; 2.25 g. AD 210.

SEVERVS PIVS AVG BRIT, laureate head right
P M TR P XVIII COS III P P, Neptune, naked, except for cloak 
over left shoulder and right arm, standing left, 
right foot on rock, right hand on right knee and holding vertical trident.

RIC 241; BMCRE 26; RSC 542.

With permission of cngcoins.com, AK Collection sale, 104