7.80g, 26x28mm
Some red encrustations around the edge. Some silvering on the reverse.
Obv: Bust of Severus II right "IMP C FL VAL SEVERVS PF AVG"
Rev: Genius standing left holding a patera from which liquer flows "GENIO POPVLI ROMANI" "ANT:" in exergue
Kent N.C. 1957, #1084
RIC VI page 624, states that the double dot series was struck from 305-306 (Series II) into 306-308 (Series III) without Constantius I and Severus as Augustus. But Mattingly further states, that though none were know to him it was included by Kent in N.C. 1957.