Silver, 3.11 grams, 19.26 mm. Rome. 210 AD. Obverse: SEVERVS PIVS AVG, laureate head right. Reverse: PM TRP XVIII COS III P P, Neptune standing left, holding trident, foot on globe. RIC 234; RSC 543; cf Sear 6346 (year). Extremely fine. A significant coin which has been published on wildwinds.com